I have always disliked listening to VM and this weekend in the Times there was an interesting explanation of why VM remains annoying .

                                                                                                                               
 
15-SECOND INSTRUCTIONS
This one makes me crazy. When I call to leave you a voicemail message, the first thing I hear, before I’m allowed to hear the beep, is 15 seconds of instructions. “To page this person, press 5.” Page this person!? Oh, sorry, I didn’t realize this was 1980! “When you have finished recording, you may hang up.” Oh, really!? So glad you mentioned that! I would have stayed on the line forever!
And then when I call in for messages, I’m held up for 15 more seconds. “To listen to your messages, press 1.” Why else would I be calling!?
(Yes, there are key-presses that can bypass the instructions. But they’re different for each carrier. When you call someone, you’re supposed to know which carrier that person uses and which key to press? Sure.)
Is this really so evil? Is 15 seconds here and there that big a deal? Well, Verizon has 70 million customers. If each customer leaves one message and checks voicemail once a day, Verizon rakes in — are you sitting down? — $850 million a year. That’s right: $850 million, just from making us sit through those 15-second airtime-eating instructions.
And that’s just Verizon. Where’s the outrage, people?