Samsung S7 Edge Desaster

I bought a Samsung S7 Edge about 14 months ago through telkom. Now the phones screen started to glitch and finally just went black, I've read a few online reviews and see it is a common issue with the phone, question is why is it still on the market. I've been driving up and down between Samsung repair Centre in the area (SSS Cellular) and telkom. Not any one of them are willing to assist with the phones repair, just say it is out of warranty. The thing is they tell me the warranty in any case only cover to replace the screen glass so even if this happened sooner I would still have to pay as it is the entire screen that is the problem. I am not willing to accept Samsung's complete lack of assistance and refusal to admit that the S7 has issues. I want my phone repaired as I did not cause any damage to it. It's an expensive useless device that I have to still pay for but can't use at all.