Disappointing Service Delivery

After being told to wait 8 months to upgrade my account, I received my upgraded account and new phone (IPhone 6s) at Richards Bay Vodacom. After 1 month the phone stopped working. I went to Richards Bay Vodacom and was told it had to be sent in, which I agreed to. I was told to change my Apple ID as they would not repair it if I did not. I changed it. The last Communication I received from Vodacom was that it was in their Umhlanga repair store on the 29/12/2015. I was told it would take approx. 2 weeks. On the 15/01/2016 I went of my own accord to Richards Bay Vodacom to find my phone had been returned with no repairs being done due to Apple ID still being active according to the repairs dep. and a crack on the screen which was not there before. After trying to contact the repair dep. for over an hour in-store with no joy I was told to come back in the week and they would start from scratch. I am truly disappointed as a lifelong supporter of Vodacom that this is the treatment I receive after receiving my dream phone I waited 8 months for and waiting more than 2 weeks to find it has not been repaired and returned in a worse condition than sent..