I want my TV back

I bought a TV 55" Samsung curve at game mall@reds in November 2018 and then in 2020 November it had problems with screen then I took it to game for repairs on the 23 November since it still had warranty ,they said I should wait for 21 days. They called me on the 16th December to come collect my TV it was fixed,I went there all excited then I asked the lady to check it for me if it's really fixed,she connected the TV only to find out it is still the same(not fixed) then the lady suggested we leave it at the store they will book it for repairs again ,since then I have been waiting for their call .game mall@reds have poor service, I dont know why I keep going back to buy from them I mean I would they call to say my TV was fixed when they know very well that it's not,if I didn't check it at the store I would have taken it home just to get disappointed when I get there....I'm ****ed. Its either they fix my tv or they give me my money back .