FNB does not want to close the settled Credit card account

FNB does not want to close the Credit card account. I settled the money several times, because the account is still open it's accumulating money everyday. I keep on paying the accumulated money (bank charges) because they say they cannot close it if it is still owing. Everyday it's a rotation of the same thing. The lady by the name of Jackie dropped the phone on me while I am still talking. I have the reference number on request. ****** and ******** wants to eat my money. That's why we leaving banks to Unit trust they are useless *******.