Samsung TV - Terrible TV - Vertical lines on the picture and Ghost shaking images.

Hi, I have bought Samsung 55" UHD J version series 6 Smart TV from Makro SA about in December 2015 and I thought it would be really nice to spend nice time with this TV. But I am really facing lots and lots of issues with this TV from Day 1. Samsung technician resolved the previous issues by changing the mother board and software. Now I am getting issues with my picture screen where the whole TV screen showing the vertical lines and blurr ghost shaking images. I tried updating the software and it doesnt help. Samsung is such a waste product i should say. Never spend this much of money on this Samsung products. This is almost 3rd time that i am facing these issues with Samsung. It looks like i should stop buying samsung products. I have asked Samsung to replace my TV when I had issues with initially and have asked what if i face issues again and now i am back with the issues with directly with the screen. I used to have samsung 40 inches tv which never gave any issues in past 5 years and this 55 inches smart tv is such a waste of money and such a stupid product from samsung. Samsung has to fix this problem as the screen is showing vertical lines on the screen after watching the tv for 30min, I have to switch off the tv for one hour then it will show the blurred ghost shaking images and later it settles down and after 30 min and again its the same issue. Please samsung, Fix my tv. thanks.