What you should do is reverse/cancel the charges by talking to your bank or credit card company ASAP!!!
See: THIS about the issue (click on link) & see if you can identify the site in question from this list of scam sites: List of Scam sites

LW Pro costs US $18.80 for 6 mths of free updates & support, & the LW Basic version is FREE. These can be purchased/obtained from here: http://www.limewire.com/english/content/download.shtml

I'm sorry to hear your plight, but it is important you act quickly to get your money back or at least stop them from continuing to charge you.