Severely Dissappointed!!!

I purchased an Iphone 6 Plus from Vodacom Pavilion, it has literally just passed its 1 year warranty and there is a hardware mulfunction on the phone. It has never been dropped or damaged, but now all of a sudden has stopped functioning. I took the phone in for assistance, the staff at the vodacom branches showed no interest in trying to resolve the problem and kept brushing the problem off as my issue. It appears its pointless taking a phone to any other vodacom store but the customer care one at Gateway, it was there that i gave my phone in for repair. I have now been told it will cost R5000 to fix my phone!!! R5000(half the phon cost) for a hardware fault! why the f*** should i have to pay for this? My phone was well looked after, im not even finished my contract, now I still have to pay the excessive contract fee for a phone i cant use and pay this R5000 to attempt to fix the issue? and how long will that last for??? You guys better catch a wakeup. I have been a customer with Vodacom for many years now, but i have never been so disgusted with your teams attitude towards resolving issues. maybe your're too big for your own good! sort my issue out or ill find service elsewhere.