Thank you for the prompt reply and link but the account in question isn't mine. It's in the name of an employee of our family business. His cell is his only means of communication and internet access for business and personal purposes. Yesterday, he spent over an hour on my landline with ATT CS trying to resolve the problem, to no avail. It was frustrating to listen to him have to explain in full, yet again, to several different reps everything that's transpired over the course of the last two weeks (two elective service suspensions he didn't request and, night before last, transfer of service to a device that's not in his possession). The reps are probably under the assumption that he set up and is able to access the account online because I don't think he's ever spelled it out for them that he didn't and isn't. In fact, he didn't really understand that's how the "someone else" (an ex-wife) is controlling his service and knows immediately when passwords and other account attributes are changed until I spoke to him after his last call to ATT CS.
It's a tedious mess. Business comm issues have been solved by purchase of a GoPhone but he'd really like to take back control of his account. Service is currently suspended at *his* request because he's under the impression ATT can offer no further help in resolving this problem that would not involve the potential of charges being filed v. his ex. He fears that could imperil her professional (RN) license, i.e. her means of supporting herself without help from him.
I've encouraged him to call CS again, spell out the facts that he hasn't already, and see if they can either disable online access or suspend notifications to the email address currently associated with it. If there is a better way to proceed or more helpful information that I could convey to him please let me know. Thanks.