Unacceptable lack of service

I purchased a Samsung TV in October 2021. My TV randomly stopped working (screen is bust I have been told) despite it being quite new. I logged a service call with Samsung on Tuesday 29 June and never received any sms as promsied. I called Samsung the next day to log another service call and was told the technician would come out within 3 days and was advised that would mean Friday. On Friday I received a call from the technician who said he would have to get the screen on Monday and therefore complete the repair on Tuesday (Today). This morning I got in touch with the technician who advised that the repair would be done around 11 or 12 today. At around 12 today, the technician advised that he will in fact only come to complete the repair tomorrow. I am annoyed that I have had to pursue this issue for over a week now without any resolution. This is a new TV, it should not be broken and in the event that it is, should be repaired as a matter of urgency. I am now considering returning the TV for a full refund. Pathetic service masked by politeness to give off the impression that Samsung are efficient.