iWin makes it particularly hard to cancel an account. You might be able to use this form to request cancellation: http://support.iwin.com/ics/support/ticketnewwizard.asp?style=classic
Include your username and the email address you used to register the account.
URLS:
http://iwin.com
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.