Shocking hisense service

Hisense service is one of the worst I have ever experienced. After having bought a smart tv a couple months ago, none of the apps ever work, the DSTV app just buffers yet works perfectly if played through a laptop connected to the tv, YouTube and Netflix needs to be reset every time you open the app. Having called the service center and been provided a software patch from 3 different technicians the software does not update. A technician was then sent out who could not get the software to update either. He came back and changed the motherboard which seemed to fix the problem temporarily but now none of the apps are working again. I phone the technician and he tells me to phone the service centre to open another case as the previous one was closed. When I eventually get to speak to someone on the other side of the call centre I get told they need to send a technician out again, asking to speak to a supervisor or manager I get put on hold for 15 minutes and the line drops. To add to this, when the technician came out he arrived 2 hours late after 6pm with no communication whatsoever. On his return he was also late with no communication again. The lack of service and willingness to help has been absolutely shocking.

Regards, Dean