perhaps that is because they leave messages every other day like you said. the man has a business, dozens of other calls and a personal life... two buddies that dont get a return call should rephrase their voice mails and not assume the guy doesnt exist because they don't get a response. i'm sure he is pretty busy and has grander things on his agenda
I wrote it once: As I can remember I wrote surely more than 30 e-mails in all the years to Mr Moaning and only got 1 response as I asked about the date when the episode about BLDV at World Business Review will be on TV.
I would guess that he never writes back to shareholders even if you would call him the king of the world. Even if you wrote him that you strongly believe in their plans and thanked him for the Belize deal as it was announced last year in March I got no answer from him.
So do you really think that he will answer YOU if your e-mail sounds very negative??? Would you answer to someone who obviously disagrees with your work of the last years???
I think that you don´t really expect an answer if you are honest ...