Need to speak with a supervisor, error LGN0817

I would like to speak with a upper level supervisor, it's been over two months and still can't login into myatt, error code LGN0817, case is at tier 2 for over a week and they can't give a time when it will be fixed. Trying to use numbersync sync and can't do it with out access to myatt. Paying for services I can't use. Why can't att fix this problem asap. I also asked to cancel my myatt count and re-register again, was told they can't delete my account, really. This need to be corrected today