I would review the scope of work - the LCD screen needed to be on it for them to repair it. My experience with them is that they generally do a good job but communications is often a bit slow and turnaround times are best case ok, not great. However if the LCD repair is not on the SOW, they cannot do it.
On repairing the LCD to new, I think most repair shops have to follow the scope of work due to consumer protection laws. E.g. if they over-repair your product, that is a legal risk to them so they have to follow the letter of the SOW.
