Dissatisfied and agry with standard bank

I used to have an account with standard that had an overdraft with credit card, in 2010 I went on debt review of wich I paid all my debts including standard bank. 9 years later (yesterday 2nd of December) I received a call from attorneys saying that standard bank has handed the credit card to them and demanding that I pay R2000. When I follow the issue I've been told that the credit was never closed therefore it has accumulated fees. What surprises me is the fact that they waited this long to inform me that the credit card that was handed to years ago was never closed.