Worst experience

My Hisense TV that I bought July 2019 stopped working this year in August, I called Hisense and they sent a Technician 24 August he assessed the TV and said he does not know what's wrong and he needs to take it to the workshop, I called Hisense 04/09/2020 to do follow up and was advised that it is not being fixed due to physical damage, how? My TV never had any physical impact and the technician advised me that if it was the case he would not take it, I want my TV repaired as per warranty