Hung up when answering machine kicked in.

He spoke for a few minutes on a government initiative that allowed households to transfer some of the tax payments made from employment & offset/transfer these to increase individual super - utter rubbish
As soon as a said that i have some knowledge of tax law & legislation & have never heard of this government scheme - he ended the call immediately
His delivery made him sound legit..

A telemarketting scam

They left a blank voicemail from a call centre

Spam caller

Definitely spam.

Just hangs up when goes to voice mail

Voicemail - sounded like an Asian man saying hello and then hung up immediately.

Hung up after listening to me saying hello twice

don know