MBD disgraceful behaviour

My wife closed her Edgars account in Jun/19, physically handing back her card at the store. This year Edcon have started charging a fee for dormant accounts, & have handed my wife over to MBD for the R100 owing for such fees. MBD are rude, stupid & deaf. They call every day, do not listen to a word you say, & cut the phone call when they don't get what they want. A week ago we lodged a dispute with MBD/Edcon on the basis of closing our account 6 years ago. Still, every day they phone, completely oblivious of the dispute. At the same time their dispute dept is e-mailing us asking for copy ID, affidavits, etc. Clearly Edcon & MBD are clueless & employ clueless staff. I will never buy another item from Edgars.