Recorded voice said she was Nicole from the National Broadband Network, and that "they" had been trying to get in touch with us for some time . . .
Definitely a scam.
Report this to Australian Government Scamwatch. The sooner we can get rid of these parasites the better.

Caller: Nicole from NBN

Automated female voice claiming NBN will disconnect me in 24 hours, press 1 to connect to a technician. Stupid scam.

Didn't recognise the number so didn't pick up.

Caller: spam

claiming to be NBN and will cut of your internet - hang up immediately. spam/fraud callers

Caller: Automated Message

Unfortunatley, being a business and having more than one line coming into the store, we are set to suffer with this spam/scam for some time. I have contacted our Telstra agent who has advised there is nothing they can do about it which seems wrong, but they say they cannot block the number.

Supposed NBN caller telling me that they are trying to get hold off me as my Landline and Data are about to be cut off. On my work number :-)

I called back; but it said "Number not in service". It's definitely a scam.

Just had this number call.
Did not answer.

Recorded female voice (synthesized) supposedly from the CBA bank - suspect a scammer and hung up - rang both my mobile and land line

Caller: Recorded voice, supposedly from NBN

Scam!

Caller: Nicole from National Broadband Network

Recorded message so I hung up

Appears to be an automated call pretending to be from NBN Co offering internet connection service. Scam.

Caller: Recorded voice said was from National Broadband Network

I reckon it's a scam as have had these phone calls before..

rings and rings never leaves a message PEST

Caller: Someone claiming to be Nicole

It is a scam with a woman naming herself as Nicole, and is a recording. A woman who claims she is from the National Broadband will disconnect me is I don't pay whatever. This is a bogus call as with many others.