Keep paying with service delay

I had my phone submitted for a warranty assesment in March 2015 I have all the paper work aswell as the all the details of the person who assisted me. The conclusion was made that the device was at fault Samsung note 12.2. I was then told that i would be contacted by mtn or a member of mtn to this day no communication has been made. I have been to various stores and called call center's with the exact same result no one can assist.<br> <br> I was told by a store member that the device is no longer available anywhere. I am still paying my normal rates for a device that no longer exists. Mtn has no regard for me as a customer as the service and the way in which i am treated is disgusting. We have requested assistance from the store we took the contract with mtn Hatfield but their are unable to assist as the phone was booked into GateWay Mtn. i live in Pretoria and i hate the fact that when i went to the store this weekend to enquire all i was told is that \no there is nothing we can do"i ahve no words to express the way i feel. My account is alwaus paid up and yet when payment is late your line is suspended.<br> <br> Please let us not go arpound in circles and get to the root of this."""