AT&T TV now offers a few easy methods for cancelling your subscription. If you prefer to cancel by phone, call 1-800-288-2020. You can cancel online at the following address if you wish to chat with an agent: www.att.com/acctmgmt/passthrough/atvnlander, or at any time at the following address, which allows you to cancel on your own: https://www.atttvnow.com/accounts/cancel-plan