Bad service from LG electronics

Terrible service from game and LG customer care. I purchased a LG 49UK6300pvb on 27 April 2019. I've been trying since last year from the time of purchase to sort out the problems with this tv. Nobody wanted to assist me to replace it as they wanted to send it for repairs although the TV was brand new and under guarantee. At the end of March this year I went to game with my tv. It was still under the guarantee at this point. I called game initially and they said I need to bring the TV to the store to check it up. When I went there, nobody could assist me. This was at game gateway. They insisted that they would help me after the lock down is lifted. Now we are almost at level 3 and I need to sort my TV out. It's been going on for almost two months and I understand that due to lockdown level 5 not much could be done, but now as things are coming back to normal I really have to sort the TV out. The screen is faulty, it's loose, shaky and has a gap at the entire bottom of the screen. The gap is quite visible. Please tell me what can be done to sort out this issue as I've been back and forth with game over the phone, at the store and now on WhatsApp. This TV was very expensive and it's still under the guarantee so it's a bit unfair that nobody at game was willing to help me sort it out. LG customer care on WhatsApp was a waste of time the agent named phuthi couldn't help me and didn't fix the issue so I don't know what else to do because all they say guarantee is finished and it needs to be repaired yet it's a factory fault the TV is poorly made.