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.
AT&T Customer Service Phone Numbers Residential: 1-800-308-4156 Products & Services 1-800-244-4444 General Assistance (Billing) 1-800-621-4533 Bilingual (Spanish) 1-800-611-4466 Repair http://www.att.com/gen/landing-pages?pid=3308 Business: 1-800-660-0407 Products & Services 1-800-324-8622 General Assistance (Billing) 1-800-727-2273 Repair http://www.att.com/gen/landing-pages?pid=9213 DSLâResidential and Business: 1-877-722-3755 Standard Free Support Services 1-866-294-3464 AT&T Support + Fee Based Support Services Or make one call to FORWARD for all of your businessâ Network Services Products moves adds and changes, Billing questions and Repair requests.