Sold a defective batch of Samsung TV and left to for the bill.

I bought a Samsung Smart TV in 2021- model UA58TU7000KXXA. After about 7 months, the tv just went blank and Samsung came and assessed it and then replaced the open cell (screen) at no extra charge as it was still in warranty. A year later the same tv starts to have lines on it, then on the 27th of April 2024, the tv just powers out on its one. I tried switching it on but after a few seconds, it just powers off on it own, then switches back on its own again. I do everything to try and reset it (as per the Samsung agents advise) but nothing works. 2 repair guys come through to access (at cost), just to tell me that the tv needs a new open cell again (new scree). For this repair, Samsung service centre charges me R7000, 70% of the initial cost of the TV. I do my research online to see if I can’t get it repaired somewhere else, only to find that multiple people worldwide who purchased the same model TV had similar issue within a year of owning this TV. This made me think that Samsung sold us a defective batch of televisions and did nothing to rectify it, they were just counting the days until all of our warranties’ run out and we would be left with the fault. This business practice is just disgusting as they should come forward and assist they customers.