Poor service

Last year June I bought a Sonitec smart TV R7000 by pick and pay in princess crossing in roodepoort, we asked all the questions you need to ask when buying a TV, one of the questions i asked was do you have come backs on this brand and the sales man said No. 2 days later the TV had 1 dead pixel, we took it back and they exchanged it, I asked again if there is any come backs on this brand and they said no. Now about a year later the TV doesn't want to switch on, yesterday I spoke to a manager who said I must bring it in for exchange or for refund. Today 23 September I went to the store to sort the problem, only to hear a different story. I was told that they need to book the TV in for repair, this fumed me and I told him to call his one up manager, telling me the same story, but in the same time he tells her that I'm making a scene and that pick n pay is private property, what so customers doesn't have rights anymore, in the first place I was **** to about the TV, because it's poor quality but by then I was not told that Pick n pay is private property I was told its a great quality and they were eager to take my my money and now that the TV is giving problem, it's kind of my problem. I have to wait. I bought many electronics at other places where I was assisted in minutes for exchange or refund, this is the first and the last time I spent my money in any pick 'n pay again. Misleading, poor service and lies