Your call is very important to us....

The one thing that should be clear when you hear the above sentence, is that the people you are calling couldn't care less about your call. If your call was truly important to them, you'd be talking to a real live person. What the message should say is "We're doing something more important than helping you right now. We fully expect this to frustrate you and we understand that some of you will hang up before being helped. We've already laid a couple of people off because of that."