Be logged in, then go to https://dashboard.heroku.com/account. Click “Close your account” at the bottom, and confirmURLS: http://heroku.comhttps://dashboard.heroku.com/account
You cannot delete your account. Try to contact them via http://www.hattrick.org/Help/Contact.aspx?InfoInstanceID=4 and tell us your results.URLS: http://hattrick.org