We don't seem to have many phone scammers here in Australia, apart from the 'Microsoft' one, but one of my coworkers got a phone call today that confused her and had both my supervisor and me suspicious. A guy called her from another state, not a number she knows, gave his name and company name (neither familiar to her), told her he needed to 'confirm' a bunch of her details and started asking for her name, phone number, address, etcetera, etcetera... English isn't her first language and he wouldn't say why he was calling, so she told him she'd call back, hung up, and asked us what we thought.
About the first thing out of both our mouths was "Don't tell him anything!"
Luckily she'd only confirmed her name, not given him anything else.
Googling didn't bring up the company name (another red flag!) but it's possible he was a debt collector looking for her son.
We've told her to not volunteer any info, insist on finding out what he's calling about, and tell him to communicate with her in writing so she's got stuff on paper if whatever-it-is goes any further.