MRP-Bad customer service

On the 1st of September 2020 I have paid my full outstanding balance on my MRP account as per statement received. This was send to MRP with a written notification via email to close the account with immediate effect. Come end of October 2020 I receive a statement just to find out that there are cost again on the account, for what ever reason. I have send this back to MRP customer service requesting an explanation as to why the account has not been closed and what is the new balance for as I did not buy anything at all from MRP. No reply and now answer form MRP. Then this start to repeat month after month. I got one call later on to inform me that the account is overdue and will I pay the arrears. I mentioned again that the account is suppose to be closed but MRP did not close it. Then no one came back to me except when calling to pay the arrears. Although I keep on sending the mails with proof to customer service and all available email addresses at MRP now one came back to me explaining why the account was not closed on the date of my request. Now the account is handed over to some legal firm for collection threatening me with a court order etc. So, because of MRP's slack attitude I sit with a balance of over R700.00 with them and if I do not pay my credit record will be affected. This is not a way to treat a client and I refuse to pay for something I did not buy or are responsible for because of the staff at MRP did not do their work.