Unsubscribe not working

So I was forced to sign up and surrender personal information to get full functionality from the app That's fine - it's a free app, I get it What I don't appreciate is daily emails from Trolley after I've unticked all the boxes in my email preferences. Trolley may feel the daily spam are "important announcements" but I'm sure if it was put to a vote, Trolley would lose hands down. Stop spamming please!