Called, didn’t leave a message

Didn't answer this but they're scammers - voice message was dialled in after their phone service thought my phone answered the call.
My advice is - if they don't leave a message or a proper message, it's not important. If you call back the number and are put in a queue, without even identifying "who" they are, again it's obviously a scam

Victorian Govt hot water system rebate

Scam

Flagged as spam automatically by phone.

Number has rung several times over the past week but never leaves a message. Definitely a scam.

Hung up a few seconds after I answered

Caller: Spammer

New phone flagged this as spam automatically. No message left. Caller using my stolen data. May they have sex with themselves in hell. Blacklisted.

Called but didn't leave a message. Went into spam

Caller: (03) 9970 5561

incoming . no response. spam.

Called, no reply when I answered, then it hung up.

Called, didn’t speak, hung up. I tried calling back, put on hold, no company name? Probably spam

Caller: Shermac Mining

Rang but did nit leave a message. Victorian prefix 03? Scammer?