Timeshares Quick Sale International Timeshares Quick Sale International ripped me off $599.00, how can I get back my money? FLORIDA Florida

In September 2007 I decided to sell my timeshare in Courmayeur (Italy). I have considered the possibility to sell it through Timeshares Quick Sale International.
The person that I contacted and who took my money was named C H R I S

M U R P H Y from FLORIDA.

The fee I was charged was $599 and was supposed to cover the cost of advertising, legal fees, and fees to file documents when we sold the proper. I paid the money via credit card. In January 2008, when I hadn't heard anything since then I decided to call Chris back just to check in and see how things were. Then I realized that the phone numbers were disconnected, e-mail address no longer valid and the website is no longer available.
At that point, I immediately did an internet search on the company name and came across this Ripoff Report.
They did not keep to the agreement we had. My property still has not sold.

So I would be very greatful if I could get money back through you

Asterix
Parma
Italy