lack of service

I got an iPhone in November last year on an upgrade at an MTN store.<br> The phone stopped working three weeks ago. The phone is still under its 6 month warranty so I took it to the store where the upgrade was done. They took and told me it would be sent to the repair centre for a warranty assessment. I was told it would take 14 working days. After two weeks I started to contact the store once a week to see what was happening as I had no feedback. They could not really help and proceeded to give me the repair centre no. I had spent over R200 in airtime to get hold of the repair centre. And only after posting something MTN South Africa facebook page did I get some kind of response. I managed to get through to an agent at the repair centre this morning. Where i was told that my phone had not been touched because they were missing documentation. So in three weeks neither myself or the store were notified of the fact. This is rediculous. I have been an MTN client for over 15 years and I am seriously considering moving to another service provider after. Shocking!