While I agree with your premise that CAs often operate outside of the law, I would also assert that just because the guy at the CA is a jerk- I am not.
To be perfectly honest, I am in my situation soley by my hand. I couldn't care less whether some pimply-faced moron at Acme Credit Hounds calls me every name in the book. Irritating? Yes! Often outrageous? Hell Yes! But I just picture a little barking chihuahua when I get some jackass like that on the phone - all HE can do is his annoying barking.
And yes - the police tactic was obviously hatched by someone with no soul.
But as far as disputing things on my CR - I only dispute what I THINK shouldn't be there. If they can prove it to me, well ok then. I'll pay - but you can bet your sweet bippy: No PFD - No money. Period.
I had another post regarding a mortgage I am holding - and the folks just decided that since he went back to school, and since she accidentally got pregnant, and since their oldest son just went to college - etc, etc - Well, I should just understand that they don't want to make a house payment right now. As an after thought, I look up the state court dockets and find out that -Hey! Guess what? - They do this to seems like everybody. I don't call them, I send everything in writing. From an attorney. I am ethical - as a borrower and as a lender.