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. Investing in quality call center solutions is important for timely responses to key stakeholders, gathering feedback, and understanding customer preferences.
Call centers are a type of BPO that focuses on training and hiring dedicated agents who can handle customer inquiries, resolve customer issues and complaints, and provide technical support. They contribute to businesses' productivity and long-term success, allowing them to focus on core functions while managing customers professionally and efficiently.
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List of the Best Voice Services Providers on the Market
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$1,000+250 - 999 employeesOrlando, FLRead More
Answering service company XACT was founded in 1998. Their midsize team is in Orlando, Florida and Unity, Maine. XACT focuses on Call Center Services, Customer Service Outsourcing, Sales Outsourcing, Back Office Outsourcing, and more.
Industries
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$1,000+1,000 - 9,999 employeesChicago, ILEstablished in 2017, Hugo Inc. Is a Customer Service Outsourcing company. The agency specializes in Customer Service Outsourcing, Call Center Services, Back Office Outsourcing, Content Moderation Services, and more and has a large team. The agency is in Chicago, Illinois and Lagos, Nigeria.Read More
Industries
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3721Undisclosed50 - 249 employeesZabrze, PolandS8 SA, a telephone answering service, was founded in 2014. The company specializes in Call Center Services and Back Office Outsourcing.Read More
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3722Undisclosed250 - 999 employeesWarszawa, PolandForsell is a midsize phone answering service and Customer Service Outsourcing company established in 2014. Their team offers Call Center Services and Customer Service Outsourcing.Read More
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3723Undisclosed50 - 249 employeesWarszawa, PolandMidsize call center WF- Call Center, is in Warszawa, Poland. The team provides Call Center Services and Customer Service Outsourcing.Read More
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3724Undisclosed50 - 249 employeesWarszawa, PolandNnext is a midsize phone answering service headquartered in Warszawa, Poland. The team focuses on Call Center Services.Read More
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3725Undisclosed50 - 249 employeesWarszawa, PolandDualco is a midsize Warszawa, Poland-based call center. Their services include Call Center Services.Read More
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3726Undisclosed50 - 249 employeesMilanówek, PolandZielinet is a midsize Milanówek, Poland-based answering service company. Their services include Call Center Services and Customer Service Outsourcing.Read More
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3727Undisclosed2 - 9 employeesMedellín, ColombiaSmall call center InConexion, is based in Medellín, Colombia. Their services include Call Center Services.Read More
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3728Undisclosed50 - 249 employeesMedellín, ColombiaFounded in 2007, Visión Gerencial is an answering service company. The team offers Call Center Services.Read More
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3729Undisclosed10 - 49 employeesBogotá, ColombiaViapin Colombia SAS, an answering service company, is located in Bogotá, Colombia. They specialize in Call Center Services and were established in 2004.Read More
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3730Undisclosed2 - 9 employeesBogotá, ColombiaSmall call center company CONTACT CENTER GROUP S.A.S, is headquartered in Bogotá, Colombia. The team offers Call Center Services.Read More
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3731Undisclosed10 - 49 employeesSão Paulo, BrazilSpecial call center is a São Paulo, Brazil-based call center. The team specializes in Call Center Services.Read More
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3732Undisclosed50 - 249 employeesSao Paulo, BrazilAmaro Group is a call center service. They are based in Sao Paulo, Brazil and have midsize team. They provide Call Center Services.Read More
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3733Undisclosed50 - 249 employeesSanto Amaro, BrazilHeadquartered in Santo Amaro, Brazil, InHouse Contact Center and Information Technology is a call center company. They provide Call Center Services and were founded in 1988.Read More
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3734Undisclosed50 - 249 employeesSão Paulo, BrazilEstablished in 2007, AHEAD Infraestrutura para Contact Centers is a midsize answering service company. Their services include Call Center Services.Read More
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3735Undisclosed50 - 249 employeesSao Paulo, BrazilFounded in 2008, Daleth AC Ambiente Colaborativo, a midsize answering service, is located in Sao Paulo, Brazil. Their team provides Call Center Services.Read More
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3736Undisclosed2 - 9 employeesSão Paulo, BrazilUltracall is an answering service company. In São Paulo, Brazil, their small team provides Call Center Services. The firm was established in 2011.Read More
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3737Undisclosed10 - 49 employeesSao Paulo, BrazilJobHome is a telephone answering service. The Sao Paulo, Brazil-based agency was founded in 2017. Their services include Call Center Services.Read More
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3738Undisclosed10 - 49 employeesSao Paulo, BrazilBlueLab is a call center. Located in Sao Paulo, Brazil, the team offers Call Center Services.Read More
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3739Undisclosed50 - 249 employeesSao Paulo, BrazilALKES is an answering service. Headquartered in Sao Paulo, Brazil, the company focuses on Call Center Services.Read More
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3740Undisclosed2 - 9 employeesTaboão da Serr, BrazilQuality Contact Center, a small answering service, is based in Taboão da Serr, Brazil. Their services include Call Center Services.Read More
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3741Undisclosed10 - 49 employeesSao Paulo, BrazilLocated in Sao Paulo, Brazil, ARC TELECOM is a small call center service. Their services include Call Center Services.Read More
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3742Undisclosed50 - 249 employeesSao Paulo, BrazilFounded in 2009, i9 Contact Center is a midsize answering service company based in Sao Paulo, Brazil. Their team focuses on Call Center Services.Read More
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3743Undisclosed50 - 249 employeesCotia , BrazilTop Use - Headsets is an answering service headquartered in Cotia , Brazil. Founded in 1996, the team focuses on Call Center Services.Read More
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3744Undisclosed50 - 249 employeesSAO PAULO, BrazilDiallink is a call center company. In SAO PAULO, Brazil, the agency was founded in 2006. Their services include Call Center Services.Read More
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3745Undisclosed50 - 249 employeesMarietta, GAAnswering service company Northwest Telephone Answering Service is headquartered in Marietta, Georgia. The team offers Call Center Services and Sales Outsourcing.Read More
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3746Undisclosed50 - 249 employeesWien, AustriaARES Customer Care Solutions GmbH is a midsize Wien, Austria-based call center and Customer Service Outsourcing company. Their services include Call Center Services and Customer Service Outsourcing.Read More
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3747Undisclosed50 - 249 employeesWien, Austria118811 Die Nummer GmbH is a midsize call center company located in Wien, Austria. The team provides Call Center Services.Read More
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3748Undisclosed50 - 249 employeesWien, AustriaMidsize answering service call us Assistance International GmbH, is in Wien, Austria. The team offers Call Center Services.Read More
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3749Undisclosed50 - 249 employeesWien, AustriaMidsize answering service and Customer Service Outsourcing company s ServiceCenter GmbH, is in Wien, Austria. Their services include Call Center Services and Customer Service Outsourcing.Read More
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3750Undisclosed50 - 249 employeesWien, AustriaMidsize call center Jota Business Services Gmbh, is located in Wien, Austria. Their services include Call Center Services.Read More
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