charge on credit card for membership which I did not intend to be a member

I do not know much about them except what was on my credit card charge and when I called the 800 # it was a recording.It referred me to the insidersecretsguide.com to chat with a rep.I told her that I didn't order anything from them, which turned out to be a weight loss tips that you can sign on and get on the internet.I ordered business cards from Vista and apparrently they got my credit card info from that site.They agreed to not charge me in the future, but refused to refund the charge.If they get $4.95 every month from thousands of unaware consumers they could be very wealthy in time.I called my credit card co.and they will take care of that part, but how many others have they done this to.They must be stopped, as it sounds like a scam to me! I have seen other complaints of this co.