How do I cancel my Billing Account?

I think the easiest way to do this is to visit the BlueSnap Customer Support page: 

http://home.bluesnap.com/ecommerce/support/customer-support/

and use your order reference number from your receipt and select the cancel subscription option:

Please keep in mind that for your own security, we cannot recover your bluesnap credit card information or login.  If you have problems you should use the links embedded on their customer page to further assist you.