Law enforcement agency???
I think not

Caller: I don’t know

Said in a robo voice that I was getting arrested and there is a filed case under my name I’m a minor ( can’t say my age but I’m under 14) I knew it was a scam but I got very anxious about it. It got to the point where I changed my number

Caller: Person claiming to be from NBN

Trying to scam me. Hung up when challenged.

Caller: I don't know.

When I called the number back, it says the number has been disconncted.

A recorded voice that says that tax account has been accessed and that there is an issue. Then invites you to dial 1 to resolve the matter before you receive a court attendance notice.

Scam scumbags
Thieving mongrels

Caller: Recorded message

This is a scam caller (ATO, National Crime Authority) claiming bank account irregularities on your account and to press 1 to avoid arrest. Hang up and block.

Scam call. They didn't leave a voicemail and when I phoned back I got a message that the number has been disconnected.

some crime centre recorded voice. Dodgy! Blocked!!

Scam
i robotic voice in a stern tone said that there has been in-illegal activity and that my Tax id has been suspended and to press 1 ... yeah right!

Scam

Caller: recorded message

spam

Didn’t pick up. It said your call couldn’t be connected when I called back

Caller: Fraudulent

0410 650 996 When I answered a recording tells me that there is fraudulent activity on my bank account and tax, crime authorities will arrest me and I have to press 1 now. Of course I didn’t press anything!

Caller: Scammers pretending to be a National Crime Authority...hang up and ignore

Scammers pretending to be a National Crime Authority...hang up and ignore

called and then hung up straight away lol

automated call saying had a tax debt

Scam
Recorded message saying suspicious activity on your account and tax account is suspended.

Pretending to be from Customs with threats of imprisonment etc etc

Caller: SCAM Call

Robo Call Advising My Banking Has Been Suspended and a 'case has been lodged' against me, then hung up on its own.