******** service fees

In 2017 I went under debt review. My accounts with fnb were suspended. So over the years I paid the debt off according to the court order and according to our records the debt was settled on Oct last year. Suddenly a ********** amount appears on our review and after going into the bank and several conversations with the councillor I get told the amount has been added due to 7 years of service fees with the bank. Firstly how can the amount just be added to the debt review without court order and secondly why was I never informed of this? We were told that our account was suspended and upon me enquiring this with the bank they confirmed the account was inactive so where do these fees come from?