No constructive Feedback/no personal contact

On the 17/01/16 my I phone 6 stopped working altogether could not even unlock it.bought on contract 4/3/15 not even a year old.have been with Mtn for many years.<br> I was away when I got back I went to Mtn Cresta Branch in JHB.I sat with the consultant and he completed forms on his computer.Was told to switch off \find my iphone.\"I did this.Was told it would take 2 and a half weeks.3 weeks later<br> For approx 5 days, I tried to phone Cresta no answer at all!Emailed no response at all! I went into Cresta on Wed 10/02/16 was told I must pay R330 as the phone was not looked at because find my phone was still on.Was not told by Cresta to also go on to the website.Cresta helped me.I was irate.I paid the R330.00 on the 17/02/16.<br> Still no feedback about my \"repairs\" or replace my phone.<br> The service all round is shocking!<br> Can someone get to the bottom of this,please??? "