How to check my minutes on my cell phone?

Att stopped access to my online acct before I finished paying my last bill. So I could not download a PDF of my bill. Billing dept promised to send me a copy taking 5-7 business days and charging me for a 'reprint' of a bill I never received. I would like to get this bill sooner and not be charged for it. It's been a very stressful experience to deal with such unprofessionalism and seemingly vengeful corporate top down decisions on how to deal with customers leaving ATT

I want plans like have for Mexico but I want some for El Salvador

I want good plans for calls for El Salvador