“How to dial AT&T customer service from phone?( AT&T customer)
To dispute your AT&T Wireless bill, dial 611 or call 1 (833). (818). (2284) from your AT&T mobile phone. For all other AT&T services, including internet (including Fixed Wireless), AT&T TV and home phone, contact AT&T's primary customer service number at 1 (833). (818). (2284).”