I have canceled your domain as requested.
If you want to permanently delete your site, please follow this guide:
http://en.support.wordpress.com/settings/delete-site/
Please read the warnings and advice before deleting a site, as we can't revert a site deletion for any reason.
If you want to hide your site instead, you can use the following guide to make your site private so only you and other members of the site can view it when logged in:
http://en.support.wordpress.com/settings/privacy-settings/