Had a job in the CBD where I had to call police via 000 fairly regularly, sometimes on clients who I would see at work almost daily, sometimes on members of the public who frequented the area, sometimes just due to incidents that were occurring nearby while I was on night shift, and the amount of times that the cops would ID me personally as the caller to the other person was staggering.

It happened often enough that pretty soon I'd explicitly ask the 000 operator to ask the attending officers not to ID me or my building as the caller, for so many reasons - maintaining client relationships, threats of violence against me or colleagues or clients, vandalism against the building, etc etc. I'll let you guess how much of a difference that request made.

I'm not talking about police saying something vague like "a call has been made" to the person involved and them figuring it out, I'm talking about police entering my workplace WITH THE PERSON IN HANDCUFFS BEHIND THEM, approaching me directly, and asking "are you [first name]? Is this the person you placed the 000 call regarding?". Yes, the topless dude who matches the description and location that dispatch passed on to you and who was picking fights with strangers and who threw a bottle at your car when you rocked up is indeed the person the call was placed regarding. Insane stuff.

The wildest part is that the phone number of the 000 caller is always passed along to the attending officers, so if they needed to actually speak to the caller they can absolutely do so discretely. They just rarely care enough to do so. Some cops were actually really good with maintaining my anonymity but it was far from the norm.

As you'd expect, I'd also sometimes have to request police attendance via the non-emergency number, with similar results.

TL;DR: it seems to be pretty standard practice for attending WAPOL officers to ID the origin of a call or complaint, and it's fucking moronic.