Broken Hisense TV

I bought a Hisense tv at Makro Crown mines at 12:29, Freddy switched it on so I can see it working, Yes it turned on, but then he struggled putting it in the box, then he put it on a trolley. When I got home, I put the tv on the bed, so I could put the stands, and then when I switched it on, the screen had cracked. I called Freddy immediately from 13:38 until 13:56 and he was not answering my calls. I then decided to go to the shop, and the guy by the name of Basil tells me that for the fact that I saw the tv working, they are not promising to change the tv. I told him anything could have happened when the tv was put back on the box or on the trolley. there is no way I am paying 5999 and being given a broken TV and I have to accept it. is it because I am a woman, dealing with an arrogant manager, no I refuse. I left the TV at the store and hope that I will be called to collect a new one, or they deliver a new one. blame is put on me because I saw it on, no, as I say, anything could have happened when it was put back on the box and put on the trolley. Imagine I had a new tv for an hour. I hope this matter will be resolved as soon as possible. Basil does not have any customer care etiquettes whatsoever.