This person is a scammer. Beware. The person claims she has a high-level security clearance and works for the commonwealth government and is trusted with taxpayers' information.
They tell you, as an Australian resident you are obligated to follow links and fill out forms disclosing your financial data and your personal information. BEWARE!!!!

Caller: Pauline from ABS

What an ass!!!!
Don’t trust her! F**kin’ scamming b*tch!
Has nothing better to do with her time.

Caller: Scam

Please don’t provide personal information. Scam call

Caller: Pauline Jefferies from ABS

Pauline says she is from ABS and is requesting compolsary informations. I will need to check with ABS first. Definitely don't like how she approached me with phone calls.

Caller: Pauline from ABS

Person claiming to be from the Australian Bureau of Statistics seeking information from me following completion of the Monthly Population Survey.
I've logged an enquiry with ABS to check why they would be getting an employee to obtain information via a mobile number.