Poor performance and aftercare service of Hisense and there TV

We bought a Hisense 58" inch Tv A6100 (serial number 58A6100UW) on 09/01/2020. In November 2020,if you switch on the TV the image is green and sometimes purple. We took it to the HOME CORP we bought it at and they sent it away for assessment. We got it back and they said they could not find any problem. In Februarie 2021 it did the same when you switch it on if the image is green or purple with time. In Februarie 2022 we took the Tv back as the image is black, but the sound is playing and they replaced the back screen. In June 2023 it once again went black with no image but sound so they said its the back screen again. On the 26 of December 2023 we switched on the TV and once again the light flashes red and does not go on. We had to take this tv 4 times in, in the 4 years we have the tv. The customers repair person says that we only took the tv back only 3 times and that the warranty has expired so they can not do anything. We feel that this is poor performance of this brand and the the company as we paid for the a product that we have not had the proper use off as it has to be repaired every year.