Nonsense company the worst

Where do you I start Tidimalo Tshabalala from hisense 1 months after they changes the main board the TV went from bad to worse the volume decreasing when you put a USB the TV going blank and having to unplug in and plug it back in so I can watch fighting one fight forb5 months now they are saying they need to replace the main board again and you can never get ahold of a team leader they do not follow process no sticker was put on the TV after they repaired it to say they did the repair worst company ever to deal with they advise that I would get my tv back today now they coming back with more stories they say all calls are recorded but can not share the call recording with me but they can sand it to my lawyer