MISINFORMED ON TV CAPABILITIES

I bought a Hisense 55" smart tv from Game in Canal Walk, I was told that the tv would automatically install Showmax once it was connected to the internet and if it did not automatically install I could go to the app store and install it myself. It did not automatically install, it also cannot download and install from the app store!! I then try getting onto Showmax from the web browser, also no luck!! what kind of smart tv is this???!! I then log into Netflix which is pre-installed and every now and then it randomly just kicks out from Netflix and goes to the input menu, where i need to re-log into Netflix, which is very frustrating. I call several times to Game who put me onto Hisense and from there on i get told that their reps would never say that their tv can do Showmax and I am mistaken. after several long conversations with the same woman telling me that I was misinformed and there is nothing they can do, I insist that I speak to a manager or someone that can actually help, she says she will get someone to call back. It is now a few weeks later and I am sitting with a piece of **** 'smart' Hisense tv that can't do Showmax and kicks out of Netflix and no-one from Hisense has called bac****!