Assumed email confirmation is needed to successfully deactivate an account: it may or may not work, as I know only the gist of it. You can try contacting a terminator admin about axing the account, best have a good explanation prepared however. Doing this isn't recommended, though if urgent, is an option.
You wont be allowed to cancel the account so quickly by a terminator then, if that's the case and you don't use the email your best bet would be stop using it if you seriously don't want to come on anymore... Why you don't have email is behond me but, meh it happens i guess.