MTN Cresta Mall pathetic and inefficient

I wrote on review regarding the appalling service from MTN Cresta Mall, Johannesburg on 09 November 2024 and have bot received a response to date. The cancelation process was not handled as it should be, despite getting notifications via sms that my home wifi would be cancelled on 30 September 2024. I sent MTN customer services all the proof of cancelation and returning the router, and yet I'm still getting requests for payment for November 2024 with a threat of my credit rating being affected if I don't pay the amount of R499. Once again I went to MTN Centurion Mall who were super efficient and helpful in trying to sort out my account. I have sent the documents and requests to sort NY account out at least twice via email and the last response I received via email on 11 November saying that my request has been sent to the Cresta Mall branch with a request to call me regarding my query. A week later and no contact from anyone. This situation is unacceptable and reflects the atrocious service and lack of professionalism on the part of MTN. I will never advise anybody to use MTN services.