Maxbhi.com — sold defective lcd product of mi a1 from maxbhi.com

Hi there, recently i ordered lcd mi a1 digitizer via maxbhi.com, with help of local mobile store replaced lcd which i brought from maxbhi.com. When i turned on 50% of screen was working & other half was pixelated. I have sent the product back to maxbhi.com, as they were saying couldn't able to replace & refund as i removed one piece of plastic sheet on top of the lcd screen. I doesn't understand how that will effect the hardware of lcd?, i don't care whether i get the refund or not. But fraud company like maxbhi.com need to get punished, so that other people won't suffer. Seems like they were getting refurbished or scrap products from china & selling to customers in india.