Hello & Welcome to Just Answer,
Sorry to hear of any issue with your phone service.
If you want to contact AT&T directly about this issue, I have their MAIN contact number below. You will of course have to use a WORKING phone line to call them.
AT&T Customer Support : 1(###) ###-####/p>
Go through menu - to "Technical Support" or "report a problem" or otherwise to speak with a human (available 24 hours a day).
You can also try their "chat" service, on the following page:
Click Here --> http://www.att.com/contactus/index/homephone.html
Another thing that often restores your Phone service (when the OTHER services (TV and/or internet) are working is to "power cycle" the MAIN "Gateway" box in your home. This is the box with all the cables connected in the back and a bunch of "lights" on the front.
A "power cycle" is where you disconnect power from the back of that box (so that ALL the lights go out), LEAVE the power DISCONNECTED for a FULL TWO MINUTES, and then reconnect the power. Then you WAIT another 1-2 minutes as the box "reboots" and reloads/restarts ALL the services.
Please let me know what you find (and try) or if you have any more questions.
If this has answered your question(s), please take a moment to rate MY service level (Excellent is my goal) so that I get credit for helping you with this question.
You should see some "smiley faces" or "stars" to do that, but please let me know if you do NOT see them (you may have to scroll UP or DOWN) or can not use them.
Thanks, ***** *****