House & Home JVC TV

I've bought a JVC TV from House & Home Forest Hill Centurion, the initial unit had a screen issue which was then replaced with a new unit, this one worked for a bit until the TV itself just started loading for hours and eventually went into safe mode. I've tried to Google some quick remedies to solve the issue myself, however, I was unlucky. I reported the issue to the shop they've sent out Telly Tenna TV CC which collected the unit and today only after 11 days without constant feedback from both stores has said I should get a new unit which would take another week or two. Absolutely poor customer service.