I have been a receptionist in the past and it sounds like you did your job as it needs to be done. The guy (whom your boss does not know, seems to think he has the ability to get you fired) was rude and did not like being shut down by you. Tough...
Figaro, AKA Debbie
and also on Plurk
Let us so live that when we come to die even the undertaker will be sorry.
Mark Twain (1835 - 1910)