LW basic is free...if you paid for it then you were scammed. The only official site for download is www.limewire.com
You can download LW anytime from there. Just remember to save your installers if you like a particular version...LW doesn't keep old versions for download

Membership? - **BEWARE** - Download p2p Clients ONLY Thru Official Sites (click on link)

Depending how long ago you paid for LW, you may still be able to get your money back. You should also report the fraud to your bank/CC company & watch your statements!
http://www.gnutellaforums.com/showthread.php?t=44499