Shopperdiscountandrewards.com, Shopper Discounts & Rewards Unauthurized $12.00 charge to my credit card from shopperdiscount.com Shelton Connecticut

I went online to check recent activity on my credit card, I noticed a charge of $12.00 marked merchandise/retail. I never purchased anything from this company.

I called the phone number given my options were to cancel membership or speak to a rep. during office hours.
I do a lot of online buying I would not know whare to begin to look of how they got my credit card number. With all the different things I do on the computer I have a lot of different user ID's & passwords.

To keep track of them I have a book locked in my safe and this company is not listed. When I tried to log on to this company Icould not because I did not have a username or e-mail address and password.

Craig
Beavertown, Pennsylvania
U.S.A.