Better to just block such numbers by opening call log >long press the number to check mark it > tap three-dot menu on top corner >tap add to auto reject list. Done!
Let them buy a new number.
Take extra time to report here.

Caller: 0420 040 588

Message said it was an automated message from Amazon Prime, your new monthly payment is due $99, press 1 to cancel. Just not sure who it was, impossible to call Amazon to check

Called twice and left a long silent voicemail. Given the other comments, assuming it's a scam number. Didn't call back.

A real human being on the end of the line - sounded like a call centre. Said he was calling from Amazon Prime. I told him to f*** off. He swore back at me!!

Called saying someone was trying to use my credit card to buy iPhone, then asked whether I was on android or iPhone, I hung up and called bank. It was not the bank, scam callers.

Almost certainly a scam, pressing 1 will probably infect your phone, giving them full access to your data. Do you HAVE Amazon Prime?

They didn’t say anything and just hang up