Epoch.com is a third party website that allows for 'discreet' billing on your bank and credit card statements. Often, the company you originally did business with is an adult website. If you've ever signed up for a free-trial of any sorts (even for products) it's very likely that it's coming from them. You have to fill out a form on the epoch.com website for the payment to be accepted, so it's often a legitimate charge that people either forget about, or don't realize. You can dispute the charge with your bank if it's on your credit card, but canceling the number won't necessarily stop them. They're very proud of their billing practices, and 95% of the time their charges are legitimate. It may not even necessarily have been you: think of who has access to your cards (spouse, children, friends, family) and try to get to the bottom of it. To make it stop, you have to cancel with the original company you did business with.
Also, this website is a complain forum for EVERYTHING not 1 company specifically. They won't reply to your email because you didn't send it to anybody. The address for the website you're on is https://www.complaintsboard.com,
it's not a company, it's just a forum. You were charged by a company - you have to complain to them