Tshepo Hifi Rustenburg Square: Bad service ever

I bought a plasma Jvc 55 inch on the 27 November 2022 at Rustenburg Square the plasma is still under warranty unfortunately it started not working 1st week of May 2023 and it's been mounted all along after the purchase .

I called Hifi to inform them they never responded then I decided to go to the store rather with the plasma, when I got there they only took a picture of a serial number and logged a house call for a technician to come of which he never came todate, I went back again as they called and said I must take a picture of the plasma to send it to the technician, I had an argument with the Manager in store Tshepo whom we endup exchanging numbers for some updates, Tshepo and his colleague informed me that some plasmas got screen damages if finger touched possibly by cleaning dust over it, I then asked did they inform their customers on purchase not to touch the screen he responded by saying: No we don't and it's actually the stores fault not to informed customers then he apologised

Tshepo logged another call for a tech to come again as in the 1st called they said the technician said telephonically he cannot drive all the way from Johannesburg to come and fix the damage, I wasn't happy at all as I asked if the technician detected the fault over the phone picture and decided not to come, Tshepo told me the technician was rude to respond to a customer like that.

Few days after the 2nd call Tshepo send me wattsup message telling me the technician rejected the call, so my question is , that's how Hifi treat their paying customers what is the warranty for? He mentioned that we not the 1st customers to complain of such nature most of their plasmas have problems with the screen, I want my money back or a new replacement