Company lists · Data verified August 2026

Top 18 Customer retention call centers based in Brazil

Name: Customer retention call centers based in Brazil
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 74 companies tracked

There are 74 customer retention call centers headquartered in Brazil (RevenueBase, August 2026). RevenueBase tracks 10,077 professional contacts across them, including 438 with verified work emails and 51 with mobile numbers. Sao Paulo is the largest hub.

This list covers customer retention call centers headquartered in Brazil, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

74Companies

10,077Contacts tracked

438Verified emails

51Mobile numbers

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The 18 largest customer retention call centers based in Brazil

Ranked by team size

Top 18 of 74 customer retention call centers based in Brazil, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Callink	Uberlandia	5,001-10,000	4,137	331
2	Btcc Call Center	Goiania	10001+	1,059	13
3	EMDIA	Sao Paulo	1,001-5,000	909	7
4	Vector	Fortaleza	1,001-5,000	700	3
5	Grupo Verreschi	Santos	501-1,000	323	44
6	Fidelizza	Barueri	201-500	140	4
7	Proativa Contact Center	Sete Lagoas	201-500	138	1
8	Grupo Cercred	Juiz De Fora	n/a	118	2
9	Ivox Contact Center	Vitoria	51-200	94	11
10	ATN Contact Center	Rio De Janeiro	201-500	71	2
11	Grupo Amaro	Sao Paulo	51-200	60	7
12	I9 Contact Center	Sao Paulo	11-50	46	1
13	WA Contact Center	Niteroi	501-1,000	39	2
14	Connecting CX	Campinas	11-50	26	1
15	Online SAC	Barueri	1-10	18	1
16	Spvox Teleatendimento	Sao Paulo	51-200	9	1
17	Connect BPO	Palhoca	1-10	8	2
18	HBC Intermediação E Negócios	Garca	11-50	2	1

Showing 18 of 74 customer retention call centers based in Brazil

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Customer retention call centers based in Brazil at a glance

As of Aug 28, 2026

51-200Median size (employees)

Sao PauloLargest hub · 21 HQs

51Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Customer retention call centers by metro

Metro	Companies
Customer retention call centers in Sao Paulo	21
Customer retention call centers in Porto Alegre	4
Customer retention call centers in Barueri	4
Customer retention call centers in Fortaleza	3
Customer retention call centers in Rio De Janeiro	3
Customer retention call centers in Curitiba	3
Customer retention call centers in Goiania	2
Customer retention call centers in Santo Andre	2

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “customer retention call centers”, with match quality audited by blind human judging, and headquartered in Brazil.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many customer retention call centers are there based in Brazil?

There are 74 customer retention call centers headquartered in Brazil as of August 2026 (RevenueBase).

What is the largest company on this list?

Callink, headquartered in Uberlandia, tops this list with the largest team on record.

Which city has the most customer retention call centers?

Sao Paulo leads with 21 headquartered companies, followed by Porto Alegre (4) and Barueri (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 438 verified decision-maker contacts tracked across these 74 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph, the same data that powers RevenueBase's B2B data products and the free research portal.