30 Oct 2026 · TrustList Editorial
Brazil rewrites its SAC customer service rules and orders call signing
Decree 13,135 replaces the 2022 SAC rules with a mandatory human option, a 20-second wait target and 48-hour fixes for undue charges. A…
5 call center companies ranked by rating, review volume and listing quality.
Between them, the 5 call center companies on this page cover administration (3), outsourcing (2), partners (2) and medical (2). They also list work in Dublin. 5 of them have written a profile you can read before you get in touch.

Administration · Outsourcing · Partners · Also in Cape Town and Africa
Boomerang Marketing Solutions is a business process outsourcing company based in South Africa, which trades as Boomerang SA and Boomerang BPO.

Outsourcing · Medical · Partners · Also in Cebu
GlobalSky Call Center is a call center and back office support provider based in the Philippines.

Administration · Also in Dublin
Kendlebell County Dublin is a call answering and virtual receptionist service for small and medium businesses in Ireland.

Administration · Also in Sudan
LeadDesk is a cloud contact centre software company for businesses that handle high call volumes in sales and customer service.

Medical · Also in Nottingham and London
Welcome to Voltron Operations Call Centre , where exceptional customer service meets cutting-edge technology.
For vendors
The order is earned on evidence: client reviews, vetting, awards and the facts a business states on its own website, which we read and date. Nobody can pay to move up. Add reviews or verified facts to your free profile to move up at the next edition; there are two ways to stand out now, and each one says what it is.
Not on TrustList yet? Add your company or claim its listing, free.
Free
Paid · always labelled
Every other way we rank call center companies, by what they do and where they are.
Articles on this subject first, then the newest.
30 Oct 2026 · TrustList Editorial
Decree 13,135 replaces the 2022 SAC rules with a mandatory human option, a 20-second wait target and 48-hour fixes for undue charges. A…
9 Oct 2026 · TrustList Editorial
Boost.ai says it serves hundreds of customers, mostly European banks, telecoms and insurers. The deal needs regulatory approval and is…
7 Oct 2026 · TrustList Editorial
The New York company, founded in 2023, says its agents already handle hundreds of millions of customer interactions for hundreds of…
Jump to another ranked category.
Everything here links back to the same verified catalogue. Pick your next stop.