Something about phones or carrier. All I got before I said no and hung up.

Yh if U pick up these numbers they add U to a bigger list and those lists get U a bigger list making more scam callers call U pretty sure that's how it works

Caller: (03) 8383 7269

Unknown number. No voice message left. Typically means the caller harvests and sells numbers that are attended live.

didn't answer, left no message

called, no message left.

hangup on answer

No message left. Probably a scam

Called but left no message, probably a scam.