I reported this incident and just received a call back from HandyDart. The person who called said, "I looked into it and I really can't explain why the Dispatcher behaved that way."
And just like that I felt my shoulders relax. I was speaking human to a human.
Just had the most utterly ridiculous exchange with a HandyDart dispatcher.
Me: Since building isn't accessible & it's pouring rain can you pick me up at the coffee shop across the street.
Her: Maybe, what's the address?
I give address (58 metres away)
Her: That's too far.