Worse service ever experienced

On 03/11/2017 I got a call from MTN call Centre agent with whom I upgraded my contract. When I got back to work on Monday 6/11/2017 I have already received confirmation of the agreement. After not having heard from mtn or any courier company I decided to call the the number supp**** in the agreement . I was then given a number for CCI SA call Centre who then referred me to a courier company who then told me that they have been trying to get hold of me since 7/11/2017 and by the 14 th they returned the headset to MTN. (Aparently the call Centre agent used my data line at home as a contact number )I’ve been struggling to get some service out of MTN since 16/11/2017. The consultants keep on telling me that they are awaiting a “RMA NUMBER” from the warehouse before they can deliver my headset. I’ve spoken to a “manager” by the name of Charmaine who told me that all the senior managers was in a meeting due to month end but they are escalating the matter and will get back to me. I already know people by name in their call Centre . I opted to rather cancel the agreement and go to a MTN store in the arcade where I work and hopefully walk out with my headset after having completed the necessary docs but was told that they still have to wait for the RMA number and once received it will take 7 days to cancel the deal before I could go to a MTN franchise to redo the upgrade. I’ve spent such a lotta money on phone calls it’s just unreal. When I called yesterday I was told that they realized that they rather have to call the department regarding the RMA number as they do not respond to emails. It’s week 6 and I’m still waiting on a headset. I will never make use of Mtn’s call Centre again. I suppose since we live in a 3rd world country we have to be satisfied with 3rd world service