Complaint of LED

I’m facing issue with my 50 inch LED Smart TV which is in warranty. Its display is not showing. We have complaints in the retail store as well but they didn’t respond us well. They are misbehaving with us. That’s your service seriously??
Very disappointed from TCL. Which says Number 1 TV brand. I’ll put my reviews on your all pages with my family. That’s not they way you are dealing woth us. We are complaining from Last month at your retail stores.