LG tv , Game store Pietermaritzburg

I bought an LG tv (70inch for 14k) at game in Pietermaritzburg (liberty mall).

They organised delivery guys that I had to pay for . They then checked it and said it was fine , they also checked it at my house and said it was fine and put it back in the box .

Then 3 days later it was mounted on the wall and immediately we saw a crack inside the screen .

I then went back to game and I was told that isn’t covered by the warranty , I then contacted LG who sent a different company form Durban to assess the tv , they said it isn’t covered by the warranty . They are now working on a quote to fix it .

Now I don’t believe I did anything wrong yet I’m basically losing 14k . They say someone must have app**** too much pressure on the tv which I don’t believe as we were very careful with the tv .

I’m not sure if anyone has had similar experience and does anyone have any advice for me .