Nedbank charging me for a card I never received

I received an SMS from Nedbank advising me that I have an outstanding balance of R204.84 for a card that I never received. I banked with Nedbank around 10 years ago and have not banked with them since. I called the Call Centre and was put through to the closure department where an extremely rude lady told me that I knew I had the card and therefore the bank would not reverse the charges and I was liable for them but she would investigate this with the ***** department. I called again on 14/08 and spoke to Ahmed who assured me that this would get sorted out. Yesterday I received another SMS with the same detail so this obviously has not been resolved!