Multiple times per day over a few days. No messages left, but when picked up the usual gap then NAB message

Caller: scammer

Yes. Supposedly from NAB telling me of $ 1100 transaction. Ended , after 5 minutes, when I told him I didn't have an NAB account and gave him an earful.

Caller: NAB Scam caller

This turkey had the temerity to ring me six times today on my home phone. He came right out and said there was a problem with my NAB account. My reply was are you the person who had ring me all day and by the way I don't have a NAB account. At this point he rung off!. This will be reported to Telstra aslo.

Multiple calls and hangs up

Called back, message about message bank full. I'm blocking this number from now on.

The call went to message bank and because they had called 6 times in short concesion I thought it might be important. So I called the number back and went through to their message bank which also advised that the message bank was full. Nothing heard since.