Game Cover up - Damage to TV

We went to Game Key West on Saturday (14 Dec 2019) as I wanted to give back my broken JVC 55" TV that I bought in Feb earlier this year. The LCD just gave in with a thick black line through it with blurry pixels on the left side of the screen. A guy named Lucas Koopa assisted me to unload the TV from my car and tested it for me at Customer Service. He then moved it again to the TV display area so he can plug a HDMI cable in. When he switched the TV on, there was a clear dot with colourfull lines in the left corner of the screen where he pressed it. When I showed him the new damage that he caused, he denied it. I requested for the Manager and a lady called Moira Ndhlovu arrived. My wife showed her the video taken before we arrived at the store that had not dots. After arguing with us she left and told Lucas to book the TV in so the Manufacturer can assess the damage. The lady at Costumer Service had short golden hair who prepared the Assessment slip. The 1st slip stated: "It has a line on the screen and a dot on the corner". I refused to sign it and requested the Manager. The lady with golden hair left and returned after a while. The 2nd slip stated: " It has a line on the screen and a dot in the corner. The dot on the screen happend in store as per customer". I refused again to sign it as everyone is trying to cover up what Lucas damaged. I went to the Manager who was standing at the Cigarette sell point and asked for details so I can report this bad service. Only on the 3rd slip did they accept their fault by stating " The dot on the screen happend in store by team member". I have no idea if my TV will be fixed under the current warranty or if I will be held accountable for malicious damage that I did not even cause. I will never buy anything from Game (Masstores) again and advise all to think twice.