Bad service Vodacom

I purchased an IPhone 6 on 27/02/2015 at Istore Cresta. The saleslady informed me that it came with a one year guarantee. On 18 December 2015, the phone shut down completely. Because I am staying in Kroonstad and have a contract with Vodacom, I took it to the local Vodacom shop, Kroonstad Elektroniese Dienste. They sent it for repairs to Vodacom Bloemfontein. We went on holday on 22 December and I visited the shop a few days before we left for an update on my phone. I was told that Braam is the guy working on it in Bloemfontein Vodacom and they would let me know as soon as it was fixed. On my return in January, I was told by the local shop that Braam required the original cash slip where it was purchased. I could not lay my hands immediately on it. On 29 January I went to Iphone in Cresta Johannesburg and asked for the manager.A guy came and offered his service. I told him the story and he made a copy of my purchase and saw that it was still under guarantee. He said however he could not do anything because I am a Vodacom client! This morning I contacted the local shop in Kroonstad and were told Braam is still battling to remove the Icloud from my phone!!!