Poor service MTN

On 20/03/25 I went to change my phone contract as it was due to expire one 26/04/25. This was at the Pavillion in Westvile. All went well and was told to wait for a Debicheck, as I explained that I do not do cell phone banking and I was told to wait for a SMS. Nothing transpired . On 26/03/25 I phoned (135) and was again helped with an up grade as well as a cancellation of another number. Ref number was *** again went through the whole debicheck issue . I would receive an SMS. On 27th contacted them again," ït is in process". On 28th I again contacted them and was told that I would recieve the SMS shortly as the systems were slow. The original lady Mandiso Mapumulo would phone back. REf *** to date I have not received a call or SMS. I must be noted that I have been with MTN for many years. this service to say the least was useless.