To request a refund from AT&T, call +1 - 8 4 4 - 5 5 6 - 7 6 6 5 and have your account information ready. When you contact +1 - 8 4 4 - 5 5 6 - 7 6 6 5, the support team will guide you through the refund process. For faster assistance, clearly explain your situation when you call +1 - 8 4 4 - 5 5 6 - 7 6 6 5 to request a refund.