Inyathi Appliances shockingly useless service!!!

I had this company collect my Samsung TV after having reported the defects with the panel and having sent pictures of the various colours depicting panel defects to the supplier I bought it from. Inyathi Appliances collected the TV from me, delivered it to the repair centre and the technician ran his tests. The lady there that answers the calls tells me the next day to say there is no fault found. The technician runs his general screen patterns and sends me a video saying there is proof that there are no faults. I then respond with sending the lady pictures of the defects, showing her that there are faults and that the technician needs to display solid colours on the screen and then they will be clearly visible. This is on Friday the 27th of March. I get no response to my whatsapp message to her that day. They then call me on Monday the 30th and tell me that there is nothing wrong and that I must come collect the TV. I ask her if she has seen my messages (which are read) and to test further with solid colours. Tuesday comes and she phones me in the morning to again say that there is no fault and that they are now going to deliver the TV back to me, totally ignoring my requests and messages. This morning on Tuesday they return the TV to me.They then call Samsung to update them on what their *********** technician has reported. Then Samsung calls me to say they run specific tests on the TV, that they have been running the TV for a few days and that they will pick up on any image defects. This mouth breather Samsung agent woman tells me now that is all they can do from Samsungs side and they can help no further. I tell this is woman that it is not the case that they have done all they can do, and that they were not capable of doing only ONE thing that I asked them to do. No one listens they just keep rattling of terms and conditions like a bot and of course I am now fuming.There are definitely defects with the panel, proof has been sent multiple times with pictures, and this panel either needs to be replaced or a refund given as it is still under the two year manufacturer warranty. This Samsung agent then says there is no supervisor I can speak to (I ask) and I must try call the store I bought it from and ask for a refund. This has been going on for 3 weeks now and I am totally blown away at the level of incompetency, lack of respect and absolutely useless customer service and support from Inyathi Appliances and Samsung support. This is not rocket science. The supplier has at least mentioned that they will be contacting the higher ups at Samsung to report on this so hopefully my issue will be resolved.