Re: what ticks you off…
Totally agree
I usually start off with saying “I want to let you know that I am recording this call, and anything you say can and will be used against you in the court of law…” 
after the “WHAT.. and EXCUSE ME!!!..” they try to repeat their intro and i go like
“Okay whats your name and day time telephone number that you can be reached at”
This usually does it - and THEY hang up 