Did you know that if you don't answer any of the robot's questions that you will be given to a human much faster than if you played around with the robot?
I was complaining to an AT&T operator once about the robot of theirs driving me nuts and was told to ignore all questions by the robot and I would get through to a human because they don't want for their customers to just hang up.
This works for me and I am a much happier person minus the irritation.