Bad Service No Customer Care

I upgraded to a new contract on the 04/03/2015 to LG 3 Beat cell phone. On 10/03/2015 the phone would not switch on. It would also not charge after trying various adaptors and wall sockets. I went to the store and while I was there it turned on so I left as it seemed to be working. On 13/03/2015, the same problem occurred. I went back to the store and she told me that they had to send it in for repairs which I was not happy with as the problem had been reported within the 7 day guarantee period and I requested a new phone. Unfortunately the lady that first assisted me had not logged the problem the first time I went into the store. I was told to go to the Alberton Vodacom shop. They tested the phone and gave me a form to say that it was an out of the box guarantee and that it should be replaced. I went back to the store and they would not replace it and said they had to send it in. I have been to the store 5 times, phoned them on numerous occasions and still have no answer. I keep getting told various stories. I have spoken to Johan, the manager and the Danie - the owner and till today I still have NO phone and NO answer as to what is happening. The service is disgusting!