NOT HONOURING MY WARRANTY

I have a contract with Vodacom and received my iPhone 6 on the 13th February 2015. There is a problem with the wifi signal on the phone and it has been determined that the device is irreparable due to IC on the wifi antenna area failure. This IC is a component on the logic board and it cannot be replaced. I have subsequently discovered that iPhone are not repaired and simply replaced. Because there is a slight bend on the phone which is totally unrelated to component failure, Vodacom wants to charge me a R5800 replacement fee. What *******! My phone is under warranty. It's so easy to just cop out and I doubt Vodacom really cares about losing one customer whilst they make billions in profit. I'm totally disgusted and definitley will not be renewing my contract. I will endeavour to give as much bad publicity as possible. The store staff just really don't give a damn. So easy to just go so sorry. Totally disgusted.