Hifi Corp selling repaired items as brand new

I bought a Hisense 65-inch Smart TV (UHD TV 65A6K) at Hifi Corporation Westgate on 23 FEB 2024. Around 20 March 2024, the TV started blinking (off and on). I reported it and was advised that it has already exceeded the 14 days so I need to go to the shop with the serial number and my slip and a technician will be sent to check the problem. Suddenly it started working fine again. During the Easter Weekend (28 March 2024), hardly 5 weeks after buying the TV, the TV started blinking continuously and I totally stopped using it as you cannot view anything. I reported it again and I am advised that it is a factory fault and a technician needs to come and fix it. How can a brand new TV that is only used between 06:00 - 08:00 and 18:00 - 22:00 on weekdays and on weekends and with less than 5 weeks of usage have this kind of behavior? And how can a brand new TV have to be fixed? After it getting fixed, what other problems am I going to experience?