Hello ichabod27, welcome to the forum and thank you for your post!
I'm sorry you're having problems contacting AT&T to pay your bill. Our team can help you with that! Please send us a private message by clicking here with your name, phone number and the best time you can be reached. One of our social media specialist will contact you withing 2 business days to assist.
Please let me know if you have any questions.
Thanks,
Dmitriy