Caller: SCAM - fake NAB call

Literally 5 minutes after I found out my mother had died - I started receiving calls from this and other numbers claiming to be from the NAB. Being concerned, I actually rang the NAB on their normal number - and they confirmed that NO-ONE from the NAB was trying to contact me. IT’s A SCAM.

Called the number back recorded message stating "Welcome to NAB, thank you for calling back" I hung up after that.

Several calls in the last few days from this number (and others). If answered I get a recorded message telling me there is an important message for me (they actually say my full name!) and ask for me to press 1. I don't. If I call back the line is disconnected immediately.

I called back number (03) 6346 6099 rang 3 times then goes to busy tone.