Re: Its a game of poker.
Thing is, most of these can be countered.
1. "Can I have YOUR name then? ... Because I want to be able to know who to whom to refer the police in regards to charges of battery and harassment."
2. "I'll take that feedback for you and relay it to him when he gets back. BTW, he never answers calls personally unless they're from the home office, and legal folks would visit personally."
3. OK, this time you have the buggers dead to rights, particularly the report from the certification authority, meaning if they tried to fight, they can get their certs pulled: essentially a threat of "You'll never work in this town again" with some real teeth.
4. What would've happened if one of them BCC'd you a note saying, "If you want to challenge the CEO so bad, how about YOU do it?" and leave a usable contact? That way, they shirk responsibility and, by directly connecting you to the guy up top, force YOU to assume the risk.