Hung up as soon as I answered, showed in coming call from Mt Pleasant Vic but a Queensland prefix

Caller: Brian Sheridan of Royal Flying Doctor Service

May be legit, but when I explained why I am cautious about such calls, due to # being ID as spam by my phone service provider, he got very miffed. I explained I do support RFDS but by donating online, not going to give credit card details over the phone & said because of risk of fraud you understand? he said "I don't" and ended the call abruptly.

Was missed call, advise number disconnected when I called back

Did not answer

no answer

no answer, hung up. then next day another scam call from Ireland same MO as the one
Welcome to 2022 - another lot of scammers

Unknown number no message left

No message left unknown caller

Unknown number. No message left. Three previous calls all from different numbers but no message

Caller: I don't know

When I tried to return the call it said my call couldn't be connected.
07 prefix 'Southport'

Unknown number - I didn't answer and no voicemessage left.