Next time, ask for his name or reference.
and tell him you are going to complain to his supervisor.

You were right to keep your cool though.
( Bartleby A dead man on vacation, Wed 17 Nov 2010, 8:15, 1 reply, 15 years ago)

I should have done it, shouldn't I?
I find it very frustrating because I can't defend myself in English as well as I can in Spanish. When I'm upset I stop thinking properly, and the words come out in a confusing way. I just wanted to go home.
(Aberracion Life's getting very complicated, but a lot of fun., Wed 17 Nov 2010, 8:18, Reply)

You should have started explaining it slowly and calmly in Spanish.
Just to watch his confusion.
(porkylips looks better as the sun goes down., Wed 17 Nov 2010, 9:03, Reply)