Official Nascar Members Club Paid for shipping on a free item a year ago and I get a unauthorized charge of 84.00 for membership without my consent Internet

Official Nascars Members Club charged my credit card 84.00 without my consent.  My boyfriend gets emails from them all the time and they sent him something last year saying he could get something for free if he paid for shipping.  I used my card and paid for the shipping for him and that was it.  I wake up this morning with a charge of 84.00 on my card.  I am not a member nor was this ever authorized.  They conveinetly charge your card on a Saturday night because they are closed on Sundays and you cannot reach anyone to put a stop to the charge.  I would say that is a business playing dirty.