While I'm away, readers give the advice.
On working with someone who is terse, verging on rude, and intimidating:
I may be that abrupt person. While I continue to work at this, there are folks who would argue I'm intimidating and can be very short on the phone.
Those folks tend to fall into certain groups. When they call, they say things like, "I think maybe I need ..."; "Let's see here, I think those notes are somewhere ... "; or just generally haven't made up their minds about what they need. My favorite are those who call and want to meet with you but haven't looked at or even opened their own calendars to see when they are available.