Top 100 Call Center Services

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Top 100 Call Center Services

The Best of December 2025
Outsourced call center services refer to handling incoming and outgoing calls on behalf of businesses to support functions such as customer service, lead generation, and appointment setting. Call center services are crucial to ensuring customers have a positive experience with their business before, during, and after purchasing. 
Jump to Most Reviewed Companies

List of the Best Voice Services Providers on the Market

  • 1501
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    50 - 249 employees
    London, England
    Established in 2020, Globe Call Center is an answering service company. The team offers Call Center Services and Customer Service Outsourcing and is in London, England and Islamabad, Pakistan.
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  • 1502
    (0 Reviews)

    Not yet reviewed.

    $5,000+
    50 - 249 employees
    Durban, South Africa
    2cantalks, a call center, was launched in 2002. They offers Call Center Services and Back Office Outsourcing.
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    Industries

  • 1503
    (0 Reviews)

    Not yet reviewed.

    $5,000+
    50 - 249 employees
    Founded in 2024, Mister call is a midsize Antananarivo, Madagascar-based call center. Their team focuses on Call Center Services and Back Office Outsourcing.
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  • 1504
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    1,000 - 9,999 employees
    Seoleads.me is a Sales Outsourcing company. The texas, California-based agency was launched in 2017. Their services include Sales Outsourcing and Marketing Strategy.
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  • 1505
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    250 - 999 employees
    Leeway International Pvt. Ltd. Is a telephone answering service. They provide Call Center Services and Customer Service Outsourcing and were established in 2017.
    Read More
  • 1506
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    2 - 9 employees
    Answering service company The Prospect Tree is in Wooburn Green, England. The team offers Call Center Services and Market Research.
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  • 1507
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    50 - 249 employees
    RAM BPO, a call center, was founded in 2020. The team specializes in Call Center Services and Back Office Outsourcing and is located in Medellin, Colombia.
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    Industries

  • 1508
    (0 Reviews)

    Not yet reviewed.

    $10,000+
    10 - 49 employees
    Monterrey, Mexico
    Servicios de Contacto Aries is a small Monterrey, Mexico-based call center. The team specializes in Call Center Services and Sales Outsourcing.
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  • 1509
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    50 - 249 employees
    Houston, TX
    The Call Center Doctors is a telephone answering service. The company is in Houston, Texas. Their services include Call Center Services.
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  • 1510
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    1,000 - 9,999 employees
    uMhlanga, South Africa
    Answering service company Ignition CX was established in 2002. The firm offers Call Center Services and Customer Service Outsourcing.
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  • 1511
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    2 - 9 employees
    Callcenterindubai is an answering service company. The New Delhi, India-based agency offers Call Center Services.
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  • 1512
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    250 - 999 employees
    Midsize telephone answering service IMPACT BPO, is based in Tegucigalpa, Honduras. Their services include Call Center Services and Back Office Outsourcing.
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    Industries

  • 1513
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    50 - 249 employees
    Midsize Accounting and answering service Vision Sync Solutions, is in Newark, Delaware and Bengaluru, India. Their services include Accounting and Call Center Services.
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    Industries

  • 1514
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    10 - 49 employees
    Savonlinna, Finland
    In Savonlinna, Finland, Etätapaamisia Oy is a Sales Outsourcing and call center company. The team specializes in Sales Outsourcing and Call Center Services.
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  • 1515
    (0 Reviews)

    Not yet reviewed.

    $10,000+
    10 - 49 employees
    Bath, England
    Branch Growth, a Sales Outsourcing company, was launched in 2005. The company specializes in Sales Outsourcing and Marketing Strategy, and is small.
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  • 1516
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    50 - 249 employees
    Tirana, Albania
    Midsize telephone answering service SIMETRIX SOLUTIONS, is located in Tirana, Albania and Durrës, Albania. Their services include Call Center Services and Customer Service Outsourcing.
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    Industries

  • 1517
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    50 - 249 employees
    Gravify is a Conversion Optimization company. The firm is located in Mumbai, India. Their services include Conversion Optimization and CRM consulting and SI.
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    Industries

  • 1518
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    10 - 49 employees
    San Francisco, CA
    AiSDR is a Sales Outsourcing and AI Agents company. They were established in 2023, and their services include Sales Outsourcing and AI Agents.
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  • 1519
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    250 - 999 employees
    Mumbai, India
    Based in Mumbai, India, Yellow Umbrella Services is an Event Marketing company. The team specializes in Event Marketing and Digital Strategy.
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  • 1520
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    250 - 999 employees
    Karachi, Pakistan
    Evaluation Grid is a Document Digitization & Management company. They are based in Karachi, Pakistan and have midsize team. They provide Document Digitization & Management and Call Center Services.
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  • 1521
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    2 - 9 employees
    Glen Burnie, MD
    Telerep is a Glen Burnie, Maryland-based answering service company. They provide Call Center Services and Customer Service Outsourcing and were established in 1976.
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    Industries

  • 1522
    (1 Reviews) 0.5

    Timeliness

    0.5

    Service Excellence

    0.5

    Value

    0.5

    Would Recommend

    0.5
    $1,000+
    10 - 49 employees
    Tallinn, Estonia
    Recruiting company Grinfi Recruitment was established in 2014. They are based in Tallinn, Estonia and have a small team. Grinfi Recruitment focuses on recruiting, IT staff augmentation, hr outsourcing, and hr consulting.
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  • 1523
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    2 - 9 employees
    Undisclosed
    The Admin Partner Agency (Pty) Ltd, a small Business Consulting company, is based in. The team offers Business Consulting and Call Center Services.
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    Industries

  • 1524
    (1 Reviews) 5.0

    Timeliness

    4.5

    Service Excellence

    5.0

    Value

    4.5

    Would Recommend

    5.0
    $1,000+
    10 - 49 employees
    London, England
    Medlysis is a telephone answering service founded in 2023. Headquartered in London, England and California, California, their small team offers Call Center Services, Recruitment Process Outsourcing, and Customer Service Outsourcing.
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    Industries

  • 1525
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    10 - 49 employees
    Histon, England
    BioStrata is a public relations agency. Located in Histon, England and Boston, Massachusetts, the agency was founded in 2014. Their services include Public Relations and Content Marketing.
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    Industries

  • 1526
    (0 Reviews)

    Not yet reviewed.

    $5,000+
    50 - 249 employees
    Mumbai, India
    I2c World Inc. Is a Back Office Outsourcing company. They were established in 2001, and their services include Back Office Outsourcing and Sales Outsourcing.
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    Industries

  • 1527
    (0 Reviews)

    Not yet reviewed.

    $100,000+
    50 - 249 employees
    Nellore, India
    Kishore tech solutions is a Nellore, India-based call center service. Established in 2023, the team specializes in Call Center Services and Other Digital Marketing.
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  • 1528
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    50 - 249 employees
    Rawalpindi, Pakistan
    Pyramids Global is a Back Office Outsourcing company. Founded in 2013, the company provides Back Office Outsourcing and Call Center Services.
    Read More

    Industries

  • 1529
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    2 - 9 employees
    Sialkot, Pakistan
    Nexteller is an answering service company. The team offers Call Center Services and Sales Outsourcing, and the firm is located in Sialkot, Pakistan.
    Read More

    Industries

  • 1530
    (1 Reviews) 5.0

    Timeliness

    4.5

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $1,000+
    50 - 249 employees
    Chennai, India

    Founded in 2014, BOSS HealthCare is a BPO services provider with about 10 employees based in Chennai, India. BOSS HealthCare offers non-voice BPO/back office services, voice/call center services, and transcription capabilities to clients in the health care & medical industry. 

    Read More

    Industries

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