poor service

My Sansui TV had a displaying issues, the screen turned black. on my visit to the store the sales lady to report that I have the the problem with my TV the sales lady told me that its the common problem . on Sunday 10.10.2021 I receive a phone call from the store that my TV had cracks of which it was not true my had only the displaying issues on arrival I saw the three spots on the screen according to my knowledge they were not there. I asked the technician where are these spots coming from and I was told that the spots were on my TV. today I visited the store I was told that I should have received a call from the technician to come collect my TV they will not fix it. they want me to pay for something that was not there on the arrival of my TV. the are busy telling me about their coverup stories of which I am not interested it. I cannot buy a TV closed to 6k last year and have displaying issues in the space of less than 24 months how possible is that. All I want is my TV to be sorted out. and the store must with its negligent