Okay, I don't know about exact legal stuff but you could try some indirect threats. First send another email requesting your fees back. Put in the letter that the fees were paid based on a contract which included a FULLY WORKING COMPLETE webpage for you - something they have not provided. No product, you are entitled to a refund. Make it a very professional letter, and cc: it to anyone you can think of. (I cc:ed my ex-husband in on an email to an old landlard - they had no idea who he was but it probably made them wonder). Give them a deadline to refund the fees and a method (refund via credit card or guaranteed funds). State that after that date you will be contacting their server provider regarding possible fraudulent business actions and pursuing small claims court proceedings.
Take screenshots of the pages, it's the only proof I can think of and the files will be dated - or get a screenshot with the date on the screen (on a mac it's top right, don't know if you can get the Windows status bar to show the date). Keep ALL their emails, if you hear nothing then forward them to their provider with FULL HEADERS on stating that you believe they are still operating and running a fraudulent business.
These fees you paid are not very much. Keep in mind that it could cost you more to actually get the money back.
If you can't get the money back I'd sure as heck try to get their site shutdown somehow.
Just thoughts... I'm not a lawyer.