Nedbank Personal Loan Complaint - Claiming more money after I already paid.

I had a personal loan with Nedbank. End 2013 I went under debt review. I paid the loan off as per the court order (0% interest rate). After it was settled, Nedbank still claimed I owed them money. They added interest even though the court order stated 0%. They claim that the debt review was terminated in March 2014. However, I have the letter dated June 2014, whereby it stated I was not in default and I had to continue paying as per the order. They fail to acknowledge this. A bunch of unhelpful people! I cannot believe that this issue has carried on for so long. I have record of all email interactions. Nobody there takes the time to understand the issue and properly investigate. I have paid slightly more than what is stated on the court order. I even received my clearance certificate already. Nedbank still fails to provide me with a paid up letter. Pathetic service! I have to go NCR route, hopefully they will look into the in more detail. Nedbank never phones the customer with any issue resolution. They simply send an email, and end of story.