more proof that hollywood is run by morons

I get a call asking me if I can audition tomorrow. i say no, that I am filming tomorrow but I can come another day.the casting director says "fine. what is your email address?" 10 minutes later,i get an email asking me what time can I come tomorrow for the audition.again,i say that I am already filming but can come another day.the casting director says no,that is the only day/time. wtf?