I'm not happy with the service I'm receiving

Where do I begin to discribe the disappointment that I've experienced with using a Hisense tv. So I bought a brand new TV at Makro last year 16 December 2019 and my tv stopped working 11 months later. Mind you I was promised a 4 year guarantee. The tv got booked in for repairs on the 9th of November 2020 nd I was promised that it will take 3 days to fix. Till this day no one from Hisense has bothered to call us. We went to Makro the past weekend and they too didn't have their story straight. I do not wish to have a repaired TV that will later have problems and I will have to go through this again. I WANT A NEW TV.. Clearly I'm the fool here to buy a tv that I'll only have for less than a year and spend so much money trusting a brand that is utterly *************... so disappointed.... what do I need to do.??? WHO CAN STAY WITHOUT A TV FOR SOO MANY DAYS. ??? @ Hisense @Makro