Nedbank charged me for a non-existing account

I am so fed up with Nedbank's shocking service! I paid my credit card in cash in full and closed my account over 2 years ago.<br> Then last week I got a call from Nedbank's legal department saying my account has been handed over to them as I owe over R2000 on an account that doesn't even exist!!!!<br> The legal department told me get proof of paying and closing the account from the branch. The branch sends me to card division, card division sends me to legal and finally, legal goes straight to voice mail... I am so furious!!! Words cannot explain my frustration.<br> <br> Please can you help me sort this matter out before this causes a problem on my credit record.<br> <br> Thank you