Vodacom Sandton!

I took out a brand new phone on contract last year. I have multiple issues with the device and have sent it to Vodacom Sandton over 5 times. After it being repaired over 4 times and coming back from technicians I was promised that the issue has been resolved. I have now had to take it back the 5th time, I contacted the head office and was advised that vodacom policy is after the 2nd comeback it needs to be sent to head office and the issue needs to be escalated, even though I asked vodacom sandton these questions and they advised it has. The head office advised it was never booked in with them not sent to them, however on this return it will be. Vodacom Sandton has now contacted me to come fetch the phone as it has been repaired, when questioned what was repaired and what the issue was, they advised the battery was replaced, when the battery wasnt even the issue! The phone was not sent again to the head office after being promised it will, and on top of it, the manager Sibo admitted to the repairs being done by in store technicians and was not sent to the vodacom head office or repair centre. All this time the "repairs" were just being done in store and I was being advised it was being sent to vodacom head office to be repaired.