Possible Identity theft

Unless those last 4 digits of the MasterCard is your card, it is likely just an error and whoever opened the account put in their email address wrong. Just ignore it, there is nothing you can do to change the email address.

I think you would find that the "Login" link doesn't go to anything resembling an official AT&T web address.  This looks like previous examples of phishing e-mails that have been reported.  Scam artists cast a wide net hoping to catch the unaware.  Even if you don't use AT&T, you may want to click their link to see why AT&T thinks you do and they might get some personal information.  If you do use AT&T, then they might get personal information and some valid credentials for your AT&T account.  It's a win-win (for them).

hover your mouse over the link and see what it leads to

This is the photo when I hover my mouse over it.

This is the photo after I clicked the log in.

hover over where the email says please login here and it will show the address bottom left of your email

Is this what you are looking for?

Thank you for your advice and for answering my questions.

hello, ATTHelp, John, I tried the link you sent me but the live chat just keeps on loading and not doing anything else.

If that is not your name or last 4 of card, then either a typo on an email address or someone casting a wide net to scam people.

However, if any information is yours, then DirecTV has an official fraud/identity theft department. Works on more traditional business hours then the rest of customer care, and you are in a vastly different time zone anyway, so their online webform is usually the best way to start. www.directv.com/notmyaccount

Also per the forum rules, do not post even partial private info (name, card details, contact info, etc.). That is for your privacy and protection.

These look like they might be legitimate payment acknowledgement messages (they are for payments one month apart) but sent to the wrong email address.