Appalling service

I am actually utterly appalled by the service my husband and I received from FNB. My husband had a revolving loan with FNB years ago which was handed over to GL attorneys, he then settled the amount via GL attorneys and got a paid up letter on the 23rd of September and we thought it was the end of it. Now we later find out that the account is still active with FNB, we then went to the Paviion FNB branch for assistance with the paid up letter requesting them to close the account but they did not help us. We are being sent back and forth and no one seems to know which department is the correct department to close this account. It has been 2 months trying to resolve this and we decided to go to another FNB branch in Westville, the same thing happened, no one knows which department is responsible, the lady called the revolving department who said to speak to the legal department, who then sent her back to revolving loan department. Emails have been sent by both branches but no reply!