Reminds me of my loan at Harvey Norman..
Sitting in my office, niece day outside, getting through the day's work.. and a phone call on my mobile comes in (unregistered number of course).
"Hello, this is Tom, can you confirm your address please?"
"Yes, this is tom from HFC; I need your address to confirm your identity."
Yeah, right I'm going to give you my personal details just because you say so. Riiight.
Fast forward a bit, and I get a vaguely threatening letter from HFC with Harvey Norman's invoice. Ok, now it's clear: Harvey Norman's banking facility is HFC.
Go to call them, and I think.. two can play that game.
"Hello, HFC how can I help you"
"Hi, this is your customer can you confirm your address?"
"No, I don't give out personal details over the phone."
Funny thing is, the above is exactly as it happened.