Absa the worst bank in history

In 2020 I paid my credit card up and closed my account with Absa . From March this year I started to getting phone calls stating I still owe Absa money!!!!!!!!! What the hell I am so fedup I reported the matter to Absa’s Ombudsman and received a ref number. They don’t close my account and the harassment continue. Hallo Peter is my last resort. My birthday is 11/02/1970