First you purchase a 3 day trial membership. What you don't know is they've signed you up for 2 accounts. Then, when you cancel, they issue you a cancellation notice for 1 account but you don't realize that you've actually signed up for 2 accounts. They'll continue billing you until you catch them. Then, after you catch them, they'll wait awhile and start billing you again in the hopes that you won't catch them. It's best not to get involved with them, but if you already have, go ahead and cancel your credit card to avoid further charges