My quiery about whether there is an effective solution wasn't addressed, which is a bit worrying, but I did get a response saying they can replace the LCD with one that has been tested before dispatch.
Having already done all this once I'm wary that it'll just come back the same, but I guess there's little I can do but go through the process again.
Sent the photo's I've taken that highlight the differences between what it looks like and what it's supposed to look like, so hopefully this will prevent getting a replacement that is also faulty.
Fingers crossed