Tv purchased at game - furious

I had purchased a brand new TV from game Shelly beach on the 20th of March 2021. (Sat) We had taken it home and used it . On Monday the 22nd , while watching a movie on Netflix the tv flickered and switched off . The red light reflected as if it is off. We had then taken the tv back to game on Tuesday, we spoke to the sales consultant Thegan , who sold the tv to us , we told him what had happened to the tv and he looked at the tv took out the box and saw for himself that the tv refused to come back on . There were no damages to the tv. The customer service desk had to assist us . We are now told that they have to send the tv to hisense to see what is wrong and this will take 21 days . I was fuming as I was not advised about this . How can game Shelly beach sell a broken tv to their customers .??? All the sale consultant did was show the tv , took it the box and showed us that comes on. So now it’s the 19th day .( which I hope their 21 days inclu weekends). I have had to make numerous calls to game Shelly beach , they never contacted me at all only I called them . Of recent I was told the hisense ordered the part and It was fixed and it will be sent to the store on Friday and only the following week we will receive the tv. Then I spoke to the Manager Marius and he said that hisense ordered the wrong part . Oh my word . Now what is going on . Now they have not mentioned what is wrong with tv. So how do you order a part of you are not sure what is wrong with the tv. How can you order a wrong part . Why does it have to take 21 days . ??? If they really wanted to it could be shorter . I am so furious with all of this . I am demanding a brand new tv . This is not acceptable . The inconvenience of not having a tv. Please can someone help because I am so furious with game , I must wait till the supplier resolves . Don’t they test the tv before selling to the customer ???? Now I am must sit with out a tv !!! Game did not have to wait 21 days to get the money of me when I bought the tv. I am sadden that game does not care they have a don’t care attitude . The sales consultant thegan even mentioned as If to say its my fault that maybe there was lightening !! Like really . There was no rain neither lightening . Please can some one assist me in getting some head way in this . I wil never what to buy anything from game again . Their service and process is pathetic