I've had a very frustrating experience with NTTA. ...

I've had a very frustrating experience with NTTA. I have been trying to resolve my outstanding balance (expired card - I didn't realize I was being charged fines) but when I call I receive a busy signal. 8 out of 10 times. The two times I did get through, the automated system hung up on me twice. Please, NTTA make some changes to your customer service.