I usually love the app. But my card info was stolen! And there's no easy way to cancel the card! The app says i can cancel or freeze it on the app, but everything i try to it says to call in. I waited on hold for hrs earlier today. And now I'm on hold again. DUH! SOOO0OOO un-user-friendly!!!! I should just be able to cancel/freeze my card with a click of a button & a click of a confirmation button. OR get a call back! I offer citi bank this wise advice free of charge.