Definition of mandible. 1  1a : jaw 1a; especially : a lower jaw consisting of a single bone or of completely fused bonesb : the lower jaw with its investing soft partsc : either the upper or lower segment of the bill of a bird.
Using other AT&T Payment Options. 1  1. Pay your bill via the automated phone system. Dial 1-800-288-2020 to access the 24 hour-a-day telephone customer service system. 2  2. Speak with a customer service representative. Once you have verified your phone number, the phone system will ask you what you would like to do.
ATT know there is a problem and trying to fix the issue, 1.5 hours later and still no service. My AT&T service is down, I cannot get any texts or calls in 78702 area. I got no service in Austin, hope this gets resolved quickly. NO ATT service in 75077.