Mobile repairing shop - Found touch screen problem after change the full display set

I went to the local mobile shop to resolve my broken touch display for Redmi note **. They check and replace the glass for ****rs. The next day morning full display turns to black. I revisit the shop, they said display also damages so its need to change and again ask me ****rs. Within few days i found automatic touch problem in my mobile. the again visit the shop, they check my mobile and refit the same display. after sometime the same problem repeated. i visited four times to the shop. I thought they cheated with the duplicate display. I felt highly disappointed with their careless and travelling to that shop.