Bad Service

I took out a contract phone with MTN on the 12/06/2017. I was having intermittent problems with the colour camera and booked the phone in for repairs on the 09/08/2017 at the store in Blue Route Mall because of the camera not always working. Since that date I have not received 1 call from anyone in MTN to advise me of the status of the repairs. When I called the store I was informed that the problem was with the courier but the phone was collected and when I phoned the Technical Call Centre they report that the phone has not been booked in. I have been communicating via email with the Customer Care Department and requested intervention but instead I was directed to phone the store again. I then requested to speak to a senior and I am still waiting. I followed up this morning again and phoned the MTN Call Centre and they tried to get hold of the store as well and it was also just ringing, I was transferred to a Department I can't recall the name of now but I was on hold for approximately 30 minutes and I terminated the call. This is extremely frustrating.