Poor service from cell c Phoenix

I booked my Samsung j7 pro in for repairs at cell c Phoenix plaza, on the 27th of April 2018 and it was booked in as a faulty software and the vibration feature wasn't working, at the point of booking the phone in I requested that the handset be replaced as the handset is not older that 4 months to which I was told that's not in the cpa and they can't replace a defective phone by the manager of cell c Phoenix who asked me if the handset has been giving me problems from the day I received it cause according to him they can't replace the phone, so I booked the handset in and waiting for it to be repaired and sent back to me, I collected the phone now from the store now and whilst in store now I tested the handset and its still defective and the manager Wesley Patrick has an attitude cause I'm upset that they kept my phone for so long and did nothing about it! This is very poor customer service from cell c cause I even spoke to Joe mabunda from the repair center who also has an attitude.