Will game-stop refurbish scratched game discs and send them back to you.?

My Call of Duty World At War disc has a few scratches on the main printable area and a gash in the plastic hub. I wanted to know if game stop will just refurbish it for you and send it back or if you would have to buy a disc cleaner. I don't know if the disc cleaner would work for the huge gash in the hub though.