Absolutely Pathetic and Disgusting Experience with Hi-fi Corporation

Bought a 55" JVC TV on 16 December 2016 with an extended 2 year guarantee. the very same day the TV was giving me an issue. There were these white horizontal blocks that were blinking on the right side of the TV. After lots of debates and fighting, they finally agreed to replace the TV. Guess it was because within 14 days of purchase. It has been just over a year since and the very same issue is happening again. I went in to store to report the issue. Two weeks after the fact, there was NO communication at all. The driver then calls to ask if he can collect the TV at 07H20 that same day. He was unable to collect the TV at any other time and said he would call to make arrangements. this call did not take place. I went into the store and after lots of debating, the manager of the store at Retail Crossing said he would follow up. The manager's along with everyone else has the attitude that I am talking nonsense and that "they will need to find out what is going on". Clearly, gone are the days where we trust and believe our customers. The driver only then called me. I had to make arrangements for him to collect the next day at 07H00 as he could not collect at any other time. I showed the driver the issue, I even took a recording with my phone. Now the guys are telling me that there is NO issue. It is now apparently the HDMI cable, the DSTV or any other source I am using. I tried several different HDMI cables and several different sources and the same issue is happening. Now that the TV is with them for repairs, I am not having any issues with another TV I own plugged into the same source with the same HDMI cable. When I try to explain this to them, they DO NOT believe me. The attitude is that there is nothing wrong with the TV and that's it. the guys doing the repairs claim that they have constantly checked the TV for 2 days without moving and they don't see anything. The technician say to me that he did not move for 2 days and did not take his eye off the screen. I am as an adult supposed to believe this ****. The attitude is that there is nothing they can do! After spending R869 on a ******* guarantee that isn't worth the paper it is written on. I have NO faith in the people, in Hi-fi corporation and in the JVC brand. This is pathetic service. Why should the customer be treated as if he is an idiot and he is talking nonsense. Why would anyone go through the hassles if there is nothing wrong. Consumers are NOT crazy.