Dear Vendor-
Please go away.
Sincerely,
All reps that you try to glean insights from or contacts at the home office.
PS Groveling at any conferences looking for meetings with 'decision makers' and leaving your card behind is futile as it goes in the trash immediately. If you don't have the hook up, you don't have it stop trying to weasel your way in through the reps. There are scores of you out there and we tend to do business with the folks we know.