5 called in 4 days no msg left
Blocked the number

Caller: NIB Hospital Support Program

This turned out to not be a scammer, started with a text message in the morning saying "NIB would call to discuss an invitation to our hospital support program", lady called saying she was Jane from NIB on this mobile number and when I said I didn't recogise the number I would call their main line she offered it as 131463 which is actually not NIB's published main line. When you connect you get a complete replica of NIB's phone handling system (actually probably guenuine) which I hung up from and called the real NIB number.

Turns out you can call their area on direct number 1800 339 219 option #2.

no call left - probable scam

Did not leave a message. Treated as scam.