Unjust service

I booked a phone for assessment in the beginning of December 2014 at Cresta Cell C, as the phone got damaged severely. Early January I received a call from the store and SMS from the service provider that the phone is repaired and can be fetched from Cresta. When I went to obtain the phone, I could see at first glance that it was not repaired at all, and the reason stated on the invoice only stated FLUID DAMAGE. This is evident as the LCD screen is broken and the phone is bent. According to the clerk at the store I was supposed to be contacted by CSure, as the phone is insured, to indicate whether the phone will be repaired or replaced, but this was not the case at all. The phone was booked in again and when I went to fetch the phone on Sunday, 2015-02-15, it was the same story all over again. I request immediate intervention in this regard as I am not satisfied with the service thus far.