Sony Experia XZ - 2017

About 3 months ago i upgraded my cellhpone contract with Vodacom. I continued with a 24 month contract and received my brand new Flagship -Sony Experia XZ phone. The phone was faulty on day on with a signal problem. I took the phone in asap. Vodacom booked the phone in and said it had to be repaired. some time later the phone came back in a worse condition than the origional problem. Thus i sent it back. and waited some more.. this was then repaired and returned . upon pickup the phone again sits with a new problem that has nothing to do with the origional problem. How many times must this brand new phone be butchered and returned with a new problem for it to be in the same working order as it was recieved.. It seems that Vodacom cannot repair this phone and Its now my right to deny this phone. I do not want it back as it been butchered, I have only had the phone 1 month. The origional problem was a factory problem. Thus we know that if you open a Sony it never the same, and this is now the 3rd time in.. I have not had a phone for over 2 months now if not 3.