Oh boy! I just finished calling the USCIS and they took like 45 minutes to take me through all routing and finally the call was terminated (apparently because of a network issue). $2 to save some frustration? Sure.
Another example is find out whether you need to know when can H-4 visa candidates work on spouse's H1B visa. These are pretty generic questions and one has to wait in queue for 45 mins to 1 hour for no reason. I am not sure whether you have tried calling once. It is pretty painful. More painful, when you were waiting for one hour and your call gets cancelled or you run out of network while driving or traveling (or in elevator). You have to just make sure that you have sufficient battery and that you don't move anywhere without a network :)