Every time I'm in a situation like this, I try to remind myself that the other person may be under a bunch of stress that I don't know about, or even something as simple as just skipped lunch. Right now, it's probably not a lot of fun being a
DVC Broker, because there seems to be a wide gap between buyers and sellers, and the Broker is probably being yelled at by
someone over something that they can't control.
That doesn't change the fact that we should expect polite professionalism. We should. And if this is something I was doing regularly (for example, if I had a side hustle stripping/flipping contracts) I would definitely try to stick with brokers that tended to treat me better. But, for a once-every-few-years thing, I'm willing to overlook the occasional slight.