The official LW site is here:
LimeWire: The Official Site for the Fastest File Sharing Program on the Planet
If you want the Pro version you'll have to purchase it, but the Basic version is free and it's a very good program.
Try contacting your bank/cc company and dispute the charges. They should be able to help. Also try contacting 360 Pro, there should be a contact number on your cc statement. Politely demand your money be refunded.