Well, I get a different vibe from your post. Forgive me, but I'm new here and I don't remember you from when you were active before. Therefore, I may not be affording you the respect you have earned from this forum in the past.
Is it possible that your lengthy e-mails and detailed instructions raised some kinda of "tremendous waste of time" flag with these dealers? If in fact they get plenty of traffic off the street, what would be their incentive to print out copies of emails, pencil in answers and scan them to send back?
If you dislike the dealer or consignment experience so much, why not hit craigs list like everyone else and deal directly with sellers?