Hisense False Adverti*****t - 4k TV not even showing in 1080p

1 Star is too many for the service I have received, in fact I would like to include @FNB into this review as well. Last month I bought a Hisense A6100UW 58 inch UHD 4k HDR TV via the FNB app. The TV arrived and I went about setting it up. The problem I found is that it does not play content in 4K via my XBOX ONE S. I then called a guy called Roscoe in the technical service department based in Cape Town, who informed me that he had a similar problem with a Playstation 4 for another customer. Because he is based in Cape Town and he needed to physically look at the TV, which was not possible, as I am based in JHB, he asked me to take it into the walk in center in JHB. I went through last Saturday (13/07/2019) to my dismay as the people there were not only unhelpful but also very distasteful as the guy at reception continued to argue with me with no regard for my issue. He made various excuses and basically did not want to help me. I had to prove to him that it was not showing in 4k before he would even give me time of day. Nonetheless, I proved there was a problem to which the technician agreed. Their solution was that they would find out how to solve my problem and if they could not, they would give me a credit note and I could then get a new 1 or a return They promised to call me the very next day to give me feedback, till today, Friday (19/07/2019), I have still not heard from anyone. I expect better service from a Trade Brand that is claiming technological advancements in their products that are false. @FNB and @Hisense_SA please assist with this????