I'm visiting Mexico for a few weeks and bought a prepaid 30 GB data plan (500 MXN) at the AT&T…read morestore on Av. Insurgentes Sur 455, Cuauhtémoc, CDMX. The salesperson promised it would easily cover my stay. Less than 24 hours later, the service became unusably slow -- I couldn't even use Google Maps, which is essential for any visitor trying to move around the city. Apps like Instagram and TikTok also stopped working properly.
I went to another AT&T branch (Fuente de Cibeles) and was redirected back to the same store. There, I spoke with the manager, Diana Jacobo, who kept me waiting for over 45 minutes without offering any real solution. At one point, she even had her employee, Eduardo, call AT&T from his personal phone and pretend to be a customer instead of contacting AT&T through official store channels as a manager.
After wasting more than 45 minutes of my day -- and completely ruining part of my time as a tourist -- she rudely refused to issue any kind of reimbursement, which would be the bare minimum and ethical response when a customer pays for a service that doesn't work.
This level of service is unacceptable. I strongly advise other travelers to avoid this AT&T branch -- or AT&T Mexico altogether -- if you rely on a functioning internet connection for navigation or communication. AT&T should immediately review this store's management and hold the responsible staff accountable.