i tried to download this music access for only 19.99.they charged me 72.31 and i still dont have the access.would like to get my money back

The website advertised free music downloads but turned out to be amembership fee of £ 62.61. No mention was made of any subscription fee. At the end of the registration page, they aaked which membership I required. I did not sign up for any of these charges. I then receive an email stating I have been charged 62.61, stating it will apeear as MP3-PURCHASE.COM.

I DID NOT AGREE TO THIS, PLEASE HELP!!!