Unprofessional services

I bought a phone July 2019 the phone gave me problems from the first 7days return phone period. I went to Pep call Ennerdale and reported the issue they then told me they unable to change the phone unless they send it back to Mtn to check if what I'm saying is the truth. I then took my phone and left the store.

A few months later in January 2020 still in the 1year warranty period my screen decided to go completely blank.The phone rang and vibrated as per normal just the screen was totally blank. We took the phone to Pep call ennerdale and they booked the phone in for repairs at Mtn they said it would be back by 6-8weeks.

We passed the 6week period and they made they first call to us telling us Mtn couldn't repair the screen they can't find the problem they will be sending it to Samsung. That was the first and the last call they made to us. We went back to follow up 2weeks after they sent it to Samsung. They finally came up with he conclusion that there is water damage to the screen taking into account that it was only screen problems. They didn't pick that fault up at the first Mtn check how is it that they missed that important fault that they claimed it to be. They then had the audacity to tell us we should pay R2060 for Samsung to repair my screen also taking into account that the phone's current value is now only R1800. I chose not to repair it since they've felt they could rip me off. They still had the nerve to tell me to send Samsung a email stating I want my phone back other then that they cannot assist.

Please help!!