Disappointing dud Samsung

I purchased a 65 inch TV from Makro Cornubia on 1 May 2019. I only started using it this past Sunday so it has not even been in use for a week and already it has a fault with a blue line down the middle of the screen. Contacted Makro where I purchased it and I am yet to receive feedback. I thought that I should spend a bit more to get a Samsung thinking I was buying quality. Unfortunately I got the complete opposite