Hisense sold us a fractured TV

I bought a 58” Hisense TV at Game Vosloorus 3rd December 2023. We checked the TV in obvious areas and everything was fine. We transported the Tv ourselves and we were very very very careful. A week later my partner notices lines when the tv was playing but they went away. Days later the lines came back and tv stopped playing. We went back to return the TV at Game Vosloorus but they did not want to take it but re-directed us to Hisense repairs. We were not happy about that as we bought the TV from them not the supplier. Fast forward a Hisense TV technician came as he was inspecting the the TV he noticed a crack. The crack was exactly under the protective cover on the side of the TV. The protective cover was still there even after purchase as we were still waiting to mount the Tv. When inspecting the tv at Game we were not allowed to uncover the protective cover. We believe Hisense and Game sold us a fractured TV and because we noticed the crack days later no one wants to be accountable. R7000 down the drain. The Tv cant be repaired. My heart is bleeding.