I never answer numbers I don’t know, have been bombarded recently with constant calls. After googling the numbers,it’s usually from scammers demanding to immediately change to a energy or a phone plan. Immediately block number

Caller: Scam

They hang up once you speek then the number is disconnected when you call them back, don't answer (08) 9234 5704 incase they are recording your voice it's obviously a scam

Disconnects straight away.

Call centre with spoofed phone number which signals as "disconnected" when call back attempted. Scammers. Beware.

Caller: Asked her to repeat name of company, all I could get was Gas or Gazmumblemumble

Ended the call and rang number back, got "Call could not be connected, please check the number, and try again"