Vodacom refusing to fix phone thats under warranty

On 2016-02-20 I went to the Vodacom store in Westgate mall to take a phone contract and I took 2 contact phones.<br> It is an Apple 5s and the monthly bill was R199.00 each phone. A week later the screen of the phone turned blue, what it would do is show the Apple icon then turn blue. I called the Vodacom customer care and they advised that I should return the phone with all its accessories to the store.<br> On 15 March I went to the store, after the phone was assessed I was informs that the phone has a software problem, They did try to fix it and they couldn't. They then booked my phone in because the phone has 1 year warranty and I should have received my phone after 21 days.<br> I have been receiving SMS's from the Vodacom repairs centre in Cresta informing me that they have received it and its booked there(Job number ***3).About two weeks later they sent another one informing me that it's been taken to a higher level repairs at the centre.<br> ***1 I receive an SMS informing me that they will not be fixing my phone. I called the repair center and I was told that the phone has a physical damage. it was not booked for hwat the