Can some one help me out of the darkness!!!!

I was recomened Limewire by a friend, I typed this in the search engine and it came up with lots of sites, i stupidly went to the top site that was sponsored and paid
Billing information
Membership type:Lifetime Full & Unlimited Access for a total of 17.88 ? GBP
Pro Version Upgrade - Movie Codec Pack for a total of 9.97 ? GBP
NetSpyProtector Option - Protect yourself from malware for a total of 8.88 ? GBP

Grand total: 36.73 ? GBP

Membership information
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i then relised the following points

1 i did not apear to have the pro version - ( i understand why now)

2 I could not view AVI files and when i tried to download any films it would not play

3 the orginal program with limewire is free

4 the credit card i gave has been billed a diffrent amount

i now dont know what to do i have got a refund minus or this is what they tell me £7.50 from the orginal scam company

do i need to down load the limewire again?
how do i get to play the movies i have downloaded?
is it worth paying more money out to get the pro version what are the extras you get?

help help help