Samsung TV- awaiting exchange

Please note that I purchased a television at the Makro store at clear water mall on November 25 2020. I purchased the 75" Samsung TV at 49 000. The TV stopped working on the 1 February 2021. I called Makro they provided me with a reference number and said that someone will contact me. I waited for 4 days for a call from Makro they provided me with a reference no and said that samsung will contact me to exchange the TV. A product specalist then came to my home to check the TV out. I am without a TV for almost 3 weeks with no Joy. Samsung promised that they would contact me but in vein. I am still waiting for me TV to be exchanged. How does a TV so expensive is faulty within 2 months of purchase and the service from Samsung is so poor.