Telkom not cancelling account.

In March 2011 I cancelled all my services at Telkom and paid up all my accounts. Since about 5 years back I started receiving invoices with an outstanding amount of less than R1 outstanding. I confronted Telkom on many ways but still I receive a account every month. This amount has now gone up to over R5. And they lited me at ITC for more than R230 outstanding. 10 years after account closure it is still not closed and I refuse to pay this as my account were paid up at the time I cancelled my services. . What to do now?