Blacklisted ?

I had a card with FNB. I wanted to pay the outstanding amount on it as I now am in the position to do so. <br> <br> I contacted FNB and was told that the account was closed due to prescription and they may not accept money on it by Mrs. Doreen Pretorius | Complaints Resolution Administrator | Retail Banking | Card Collections. She also said that they instructed their legal and Card division to close the account(which was never done)<br> <br> I then contacted card division and they told me that there is still a card on my name and that I owe money on it. I called card division and the lady told me that even though it has prescribed they do not close it on their system and that I will never be allowed to get any service or product from them again regardless of what the law says about prescribed debt<br> <br> Please explain what and why and how I should do to rectify this...