Spent R30000 on a damaged TV

I bought a UHD 65 inch TV and the sales person was Nelson fantastic young man with excellent customer service. I was informed they had the last tv set which was opened to show a client only and it was still new and the box was only open to show a client. I purchased verything for R30 000 and upon coming home and opening it up and setting it up i realised the tv was damaged and not working. I expect this to be resolved immediately and i wont wait for a new one cause R30 000 is alot of money to spent on a TV. This is unacceptable