I called back number 0490 291 122 reached voice mail but did not say for what company.

Caller: They're an environment related charity...

I took the call and was on the phone for ten minutes before I hung up. They were talking about recently contested environmental issues in Australia. Unsure if they are asking for money, or just raising awareness as I was not on the phone long enough to find out. They have called multiple times - if you do not want to be disturbed, just block the number. Other than being annoying, they are harmless.

Called back and received a recorded message saying that it was for a charity that I may have previously contacted, but did not say which one.

Have received missed calls. I don't ring back. If they want me they can leave a message or text me.

Has called 4 times in the past 2 weeks, never leaves voicemail. Assume charity or spam so I don’t answer

multiple calls in two days, no vm left and no one when you call back. Spam caller.

No message left. Called back, it didn’t ring but went straight to a message saying “sorry, you can’t leave a message for *female voice but unintelligable name*, the message bank is full”
I’ll be blocking the number, another unsolicited nuisance call

Number unknown

Called twice in 3 hours and left no message

Caller: I don’t know

Who r u