I was told that I was 'Unprofessional" because I b...

I was told that I was 'Unprofessional" because I backed out of an interview with a client. So I guess I should have gone ahead with a job I didn't want. That makes sense. I was also told that I would be removed from the smartsource database. This recruiter must not know of the considerable competition there is between recruiting firms. Who cares if I'm removed from smartsource. What a feeble threat. And how unprofessional is that.