I don't do that to them, though I have occasionally called them a bunch of names (besides crook and scammer.) Sometimes I'll ask how their family feels about them being criminals, or how they feel about working for criminals, or asking why I should trust them with my information now when they've a bunch of lying crooks, or I'll tell them "just a sec" and put the phone down.
Lately I've been telling them that the last time they called, I got cut off, and asking what notes they have on their computer screen from the last time they called. Some of them hang up right away, but the one yesterday said she doesn't have a computer, she just takes my information on paper.
What a cheapass bunch of scammers! Back when I designed PBXs and call center equipment, the main costs changed from telecom charges (early 80s) to labor (90s), but even now, when phone call minutes are basically free, and exploitable workers are pretty cheap, it still seems hopelessly inefficient not to give them good information so you can maximize the money they scam from customers and minimize the labor it takes to call your victims, probably even if you're also ripping off the call center workers by having them work from home on "commission".