Pep Stores review: cell phone

I bought a cell phone at pep cell Tembisa store on the 27 July 2019. By the end of November I realised that it was no longer charging. I took it back to the store and I was told to collect it after 6 weeks. However they called me and requested me to pay R1200 saying it was a physical damage of which they did not explain to me in the first place. I then requested the to give it back not repaired. Now they want me to pay R200 before they give it back not fixed.