Inadequate Deductions

I was registered on Bankmed until last year. They registered me and months later informed me that they were not making their required registration deductions. I agreed to pay them back. I called Bankmed last month to find out how much I was still owing. I was informed by Ntando that last month was the last month I would have Bankmed deductions from my account. Keeping in mind that I did not really have to pay them back as it was their fault that they registered me (account details and all), but did not make their deductions. So now a consultant from Bankmed confirmed that I have paid them back in full as per our agreement, but Bankmed is still deducting from my account. I called them today on *** and they made me hold on, on the phone for about 20 minutes where I just eventually hung-up.