Twice a week I have to call a certain number in order to make a reservation for the following week. The phone number is constantly busy, in fact, very often you don't get a busy signal instead you get a message that says "all circuits are busy, please hang up and try your call again". I am looking for an app that will automatically hang up the phone and redial the number whenever a busy signal or that message is received. Does anyone have any thoughts on this? The app needs to be fast.