Complaint Review: iwin.com

On Feb. 3, 2002, I reported to iwin.com that I had won $500.00 on their DJ Scratcher and when may I expect my prize winning. They first replied that I could only win Horizonally and not vertically. However their rules states "horizonally, vertically, and diagonally" I wrote them again and asked them to refer to their own rules. I got a reply and here is the context: "The rules for this game were changed on 2/8/02. You wrote in on 2/3/02 in regard to a three icon vertical match. As the rules did not change until 2/8/02, we cannot retro-credit a win. Any future horizontal, vertical and/or diagonal wins will be credited."
Sorry.
Heather
Prize Claim

This sounds like fraud to me and I would like to request information on how to contact the gaming commission? What can I do or should do?
Thank you for any help.
Romanda
Davenport, Virginia