Hey Bad luck! First thing ..... you must try and do is stop the payment!!!!! contact your CC company and explain you have been ripped off.
It seems to me that somehow the Limewires you get from these scam sites do not work properly, and I think you will be best off if you delete what you have and download the Basic Limewire from
http://www.limewire.com/english/content/download.shtml
Good luck, and come back here if you need more help