DoomMaster:
Try taking action thru the bank that issued your debit card. Also, contact the State Attorney General of the state of the merchant. If you can find others haveing the same or similar problems with the merchant, include that information also. If your feeling really energetic or pissed off, contact the merchant's local chamber of commerce to see if they are a member (or ask if they exist, that might get them looking around) and police. Basically, light as many fires as you can, then see where they spread. Might get your money back or maybe not, chances are one of these will hit dirt and make someone squirm.