Just got an email from them: "why not encourage a friend to enrol". Looking for the unsubscribe link I only found a link that says "Modify course email setting

Just got an email from them: "why not encourage a friend to enrol". Looking for the unsubscribe link I only found a link that says "Modify course email settings". Click on it and there's no way to "modify" any "email settings" so I went to delete the account. Turns out you can't because they think it's not necessary ..