Terrible after sales support on Samsung TV

We bought a Smart Samsung Full HD 40" TV online from Makro on 24/11/2018. We only started using it in mid July 2019. On 3rd October 2019 the screen went and started showing all different colours. We took it in to Makro Ottery on 7th October 2019 and it was sent away for repair. We kept following up and was told to fetch it on 23 October 2019. While setting it up again with the correct channels, it once again stopped working and just showed red, green, yellow. We took it back to Makro on 24Oct and once again it was sent off for repair. It has now been a further 3.5 weeks and we were told it could take another 2.5 weeks. Makro have now had the TV longer than it has been in use! 6 weeks later and we are still without a TV! This is unacceptable! We were told it has to be sent for repair 3 times before a new one is issued. That means 18 weeks, 4.2 months before you can use the new TV again. Surely one should get better service than this on a Smart Samsung Full HD 40" TV?