FAULTY DEVICE

I upgraded my contract, cell nr *** on the 23rd of February 2015. Sony Xperia M2 Aqua. In the first week of April 2015 however it had to be booked in for repairs because the sound disappeared. I fetched it ONE MONTH later. THEN .. Two months later on the 11/07/2015 it had to be booked in again because the screen of the phone went BLACK. So although the phone was ONLY 5 months old at the time we only had 3 months use out of it because of it being booked in for repairs and being repaired the rest of the time. This is a 24 month contract and judging by the repair history within the 5 months it is obvious that it is a problematic phone and that this is not the last time it will visit the repair centre. When i requested the phone be replaced the manager said that it can only be replaced on the recommendation of the repair technician. Being an employee of Cell C, obviously, the technician has not recommend that the phone be replaced. I pay a lot of money every month for minimum airtime and data and a problematic cell phone. It is only reasonable to expect that Cell C honors their side of the contract by providing me with a new device as I have honored my contract.