apushatayid, great point!
Equally worse are those few remaining fools who have their secretaries place their calls to line them up. After answering your phone you hear, “hold on for Mr. X” and then wait.
I used to know a CPA who was especially guilty of this including having his secretary continue to extend the wait (i.e. “Mr. X will be with you in just a minute”). This stopped when I told him that he should not call me unless he was ready to talk immediately or I would bill him for my waiting time.