Another file sharing site without account deletion option.
Contact them using the ticket system: http://support.turbobit.net/index.php?/Tickets/Submit
Include your account details: your username, and the email address you used to sign up with.
Please note that AccountKiller.com is not associated with the business listed on this page. AccountKiller provides easy-to-understand instructions and guides on how to cancel charges and relationships from the list of businesses on our site, we have no affiliation with these businesses.