If you were billed by EPOCH, it's probably a porn subscription you never canceled. [although they do bill for other sites]
If you were billed by epoch it's because your card info was entered on a porn site that uses EPOCH [which is a billing company by the way and not the website that you bought] to process the payment. Your card's fraud department will not issue refunds because the charges were VERIFIED, meaning whoever made the charge had the 3 digit security code, the expiration date, and zip code which all matched to your card. Ask your spouse [although probably wont work cause they would have told you if they wanted you to know] or your teens, roommates, etc. If you were seriously a victim of Identity Theft, CALL EPOCH!!! their number is on your statement. They can tell you who's the registered owner and physical location of the computer from where the purchase was made.
Seriously, their number is on your statement every month. Why people don't call is beyond me.