There is no black list that is circulated among agencies. If you annoy a particular agency then they will not use you. This'll probably just take the form of deleting your CV and the recruiter telling the other bods in the office not to use you. If you haven't been too big a problem they'll forget about you soon enough and you can bang your CV back in. I've had agencies call me up to offer me work; I've had to point out to them that I'm actually working for them at the time.
There is a myth amongst some connies that there's a blacklist, but why would there be? Business is competitive, if I were an agency and had a numpty working for me and blew him out, I'd actual WANT him to work for a competitor, making me look good!!!