Some idiot pretending to take donations for a 'police magazine'. First said he was from a union, then from a magazine. Block the number or report it.

Caller: Someone trying to sell adverting for a police magazine.

Smelt like a 'sell ads in a fake magazine' scam to me.
Very nasty that they try introduce themselves as police.
Caller was a male, Australian English native speaker.

Caller: A Scammer Pretending to

Pretending to be from pigs. Told him off. He hung up

It may be worth having a further look into this before we assume this is a scam.
This link below should clear up any confusion people might have.
https://www.cwaustral.com.au/

Caller: Dodgy fake magazine advertsing - STEER CLEAR

Fake magazine pretending you're donating to a Police mag - REPORT them for trying to scam money out of you!

fake police wanted to advertise for my small business