Get out of this game. AT&T has the Worst Customer Service Available Period. Call their 800 288-2020 number you are asking for trouble.
The Worst. Period. ATT CUSTOMER Service are TERRIBLE. My advise Get out of this game. ATT is a JOKE
Due to contractual agreements and the nature of your issue, you'll need to contact AT&T for a resolution. When contacting AT&T support, it is very important that you provide your full AT&T email address so that they are able to successfully locate your account in their system. Here's how to contact them: https://help.yahoo.com/kb/account/sln25426.html
michael brinkley commented
Doesn't Matter. Critical or Not. AT&T EMAIL IS A JOKE. TERRIBLE CUSTOMER SERVICE. CALL 800 288--2020 YOU are asking for a Run-A-Round. I have been a AT&T CUSTOMER for Decades. This company has lost a long term customer....They don't care.