Where did you buy your version of LW?
LW Pro costs US$18.88 for 6 months of updates & email support. The only official site for downloading is www.limewire.com.

Read through these threads, they have a lot of info about membership, scam sites & how some people have got their money back from scammers.
http://www.gnutellaforums.com/showth...threadid=28751

http://www.gnutellaforums.com/showth...threadid=44499

You should contact your bank/CC company & report this, they might be able to cancel your transaction, depending on how long ago you paid!