Non-Responsiveness of AT&T reps for 8 months

I have been trying to resolve many issues since May 2017.  It is now December 2017.  Each rep I speak with fails to notate our discussions.  I spoke with Fraud to alert them of stolen information on my account. They failed to terminate the plan as they promised to do because of the breach of my information which the rep setup while I was in the store allowing someone to attempt to fraudulently purchase equip.   The rep setup access to my account unbeknownst to me with a direct link on the device into my account.  The tablet was stolen from my briefcase immediately outside the store and I received a notification of excess data usage.  I accessed my account, saw the activity came from the new line, timely contacted AT&T to inquire what these purchases were.  I still cannot get this account removed.   The fraud unit advised that they would disregard the newly added line since it was a data breach and due to the security breach on my account.    I am still being forced to pay for a plan that they advised would be removed because of the breach.  I need resolution and this has gone on for 8 months now.   I have repeatedly contacted them to find out no one notes the account.  No one calls back when they promise to call back within an hour.  I have spent upwards of 20 hours trying to get this addressed.   I haven't been able to change my plan because as a result, they locked me out of my own account.  The internet access was useless.  The phone contact goes unanswered, I am put on hold, no one returns, and/or they promise to contact me and I never hear back.