priceshuffle.com took 149,00 from my credit card, Internet

i was reading on the internet about penny auctions and thought to check it out.after going to the web sight suggested i thought ok this might be cool.the web sight said i can get 100 free bids by just joining.so i joined thinking i could try there 100 bids and see whats it like.well after i joined they charged my credit card 149.00 dollars no where on there sight was anything said about a charge moneyshuffle.com screwed me out of my hard earned money!!!! i had no idea of the charges until it was to late i got scammed!! please help