I didn’t answer but have received several of these calls recently. After googling the number (which I do 99% of the time) glad I haven’t answered.

Caller: Travel survey

Have received alot of calls from this number asking lots of questions about travel habbits and lifestyle etc..... Said they were govt dept - but doubt it, more like data harvesting - but nor sure why they would keep calling back..... I'm still doing the same thing and in the same. Demographics.

Caller: I don’t know

Didn’t leave voicemail. I’ve been getting spam calls daily saying Telstra will disconnect my internet if I don’t press 1 etc so I didn’t answer.

Caller: (07) 3740 7000

"Survey" about people's travel movements

I didn't pick up but called back and got an automated message advising that I had called the Australian Market and Social Research Society...