Definitely a scam site. Cancel the transaction via your CC asap. Explain it was a fraud. Most credit card companies have fraud dept.'s & will usually accept such details. Maximum support LW has ever offered is 12 months. Default amount is 6 months.

Do you have the url website address also so I can add it to the list?

If you wish to use LW, start off with LW Basic which is free. Then 'if' you like it enough consider getting Pro after a few months minimum.
The differences between Basic & Pro are only subtle anyway. There's no dramatic differences & on the surface both look the same.
Lime Wire LLC is the official company. I doubt that is who you went through. Perhaps a similar sounding name.
The company name can be seen in light grey at bottom of the initial download page: http://www.limewire.com/download/