The number left a voice mail saying that his name is Niddy/Nidie... and request to call back to the number without any reason. Suspicious voicemail. I never call back someone who never tell me the reason for the call.

Caller: Nitiphon

They say they provide anything tax depreciation or property valuation related and provide estimates on properties to forecast cashflow.

a person called "Niddy", no organisation name, no reason. Just asks you to call back. 3 times left messages in my voice mail.

Same, that person "Niddy" just left his name with no reason, requesting you to call back. He has done so on my number twice, suspicious.

Called twice, once being after I blocked the number. A recorded message purporting to be from Department of Home Affairs stating that due to identity theft there is a warrant out for my arrest. Recorded with an american accent.

I hid my number and rang back: "Optus advises the number you called is disconnected or incomplete".