To cancel refer to the email that you received upon signup from webmaster@ten.com. That email contains information on the billing provider used to process your membership.

We use the following billing providers:

Interactive Gallery - 661.621.9337 or 800-630-2405 - ten@net-member.com
Netbilling - 888.357.8166
CCBill - 888.596.9279
DHD - 866.370.1717
GXBill - http://gxbill.com/support/

Please call your relevant billing provider to cancel your account.