"Please listen carefully"

One question: why do all telephone based automated menu systems change themselves constantly. In other words, why is it always "our options have changed"? What is the inherent instability in telephone touch-tone based dialling systems? Or is this just a scam with the telephone company in order to keep us on the line longer while brainwashing us with noveau cliches:

"Please listen carefully, as our options have changed. Your call may be recorded for training purposes. Please hold, because all operators are currently dealing with other customers. Your call is very important to us."

On the other hand, don't get me started on these new 'voice activated' systems, which are incredibly unresponsive. If you want to subject yourself to intense annoyance, may I suggest Virgin Mobile USA, whose "virtual advisor", Amber, is possibly the most irritating false person I have ever encountered. Call 1-888-322-1122 from the USA to enjoy the pleasure of her company as she does her best to prevent you from speaking to a real person who might just be able to help you with your problem.