VERY UNHAPPY TERRIBLE SERVICE

I have a blackberry Z10 that is a year old under contract and due to no fault of my own the phone had died completely and am unable to even switch it on. Two weeks after getting the phone I took it to Alberton because people were complaining that when they call me I sound very far away, they guy stands next to me and calls me and says he can hear me fine there is nothing wrong.Now I have taken the phone to the Glen and was told to go to a Vodacare store. I am so tired of getting the run around. I have called your call centre for assistance and was given the number *** and then they couldn't help so they gave me *** and a teleprompt said they are having technical problems, I called cancellation to find out how much will it be to cancel R1995.00 that is crazy. I expected the phone to last the duration of the 2 year contract. this is very unfair as I am paying the contract for the phone that doesn't work now I must take it at my cost to the repair centre and pay for the repairs when I did nothing to break the phone. I don't see why I should pay??? contact me urgently