Caller: ATO

Claimed to arrest me if I didn’t call back..

Left a voicemail saying the ATO was suing me under my name and I needed to call them back

Won't pick up when called back when my number was hidden.
I'd say its a scammer attempt.

Fraud just block it

Received automated call from this number telling me to return the call or an arrest warrant will be issued!! too scared now because police always use pre-recorded messages to get in touch, they would never actually have a real person call you!
Clearly fishing, DO NOT CALL BACK!

robotic voice claiming I will be arrested if I do not return the call

American voice threatening arrest warrant as law suit is apparently out on my name, if not returning the call. Asked to be called back at "Department 3" at the above number.

Missed call. Called back, claim from ATO. When I challenge, she hang up. Called ATO to make sure it wasn't one of their number. They confirmed that it wasn't one of their number.