MTN CONTACT CENTRE WORSE SERVICE EVER

Since 2001 i have been a client of MTN and now im forced to go to CELL C this week due to MTN lack of service. Over the past two weeks i have spoken to about 11 service agents who failed to deliver on promises made. My contract is due for upgrade in October and because my ph is completely damaged i requested an early upgrade with it being so close, I was told that i needed auth from Retentions dept to approve from the service centre in Canal Walk Cape town as i do meet the criteria for early upgrade. I contacted them on 808 on about 7 ocassions as sometimes put on hold and call dropped, i was then informed by agent named Farieyal Rajah who said she will escalate it and should feedback 2-3 working days, a week and about another 4 calls later still no feedback. The worse was Simon on ref *** after 6 calls later about waiting for retentions who said they dont have a retentions dept . After losing hope in the 808 number i tried as i advised on a SMS with anem and surname and they will call back in 24hrs 96 hrs later there was no call back i then tried a *** requesting for retentions and spoke to another 5-6 agents. Please contact me on *** as i dont have cel