BAD and unprofessional service

I took my TV in to TV Tronics, Brits NW to have the backlights replaced. Received back and only had for a few days and the same thing happened again. Spoke to owner who had lot to say that I should have replaced all the lights instead of the ones that was blown. I again paid and received Tv back after 2 days. TV only played for 2 hours before having lots of lines and dots on screen. Owner now blocked my phone number after I queried him regarding it.