We dont use credit cards directly, for security reasons we use always Paypal to handle all transactions between our customers and us. So we dont make debits on your credit card, BUT Paypal does, so when you want to cancel your paypal subscription (which is created the moment you signup with us) you must first login to your Paypal account.
Here is what I found on Paypal answers: Here
Q How do I cancel a subscription?
A You can cancel your subscription from your transaction history.
A subscription can be canceled up to the day of the next scheduled payment.
1. Click My Account.
2. Click History at the top of the page.
3. Select Subscriptions from the Show menu.
4. Check the From box and change the date back 2 years.
5. Click Search.
6. Click Details to view the details of a specific Subscription Creation.
7. Click Cancel Subscription.
8. Click Cancel Subscription again.
About Point 4, find the activation email which we send the moment you signup and find the date, so that you dont have to go searching for 2 years….
Hope it helps.