mailing bill into AT&T

I am concerned because the mail is slow since the covid-19 pandemic, I want my bill to arrive on time so there is no penalty. Please respond by phone if you can, I haven't received my bill yet. I want to speak with a knowledgeable representative to learn how to get the bill in on time. So far it hasn't arrived yet. My phone is (Edited per community guidelines).

Thank you for any help you are able to offer. Please phone me so we may discuss this.

Sincerely,

Rebecca (Edited per community guidelines)