Log in to your client area at http://www.fast2host.com
Select My Domains from the menu.
Select the More Options button for your domain.
Click the "Disable Auto Renew" button.
Check your invoices to see whether an invoice has already been generated for the renewal - if so, contact us to get it cancelled.
Email any time or call 01480 26 00 00 014 80 26 00 00