Caller: I don’t know Optus says it’s a disconnected service

I missed the call. Called it back with an Optus message saying “ this number is no longer connected”
Below is proof of the missed call Received by my standard Telstra missed call message service.
You missed a call from 0422 711 761, who said "Goodbye." This message was provided by Telstra at no charge to you.
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I receive an average of one scam call per day, mostly trying to get my ID saying they’re from Services Australia. tax department, or Calling about a car accident (touch wood Ive never had one)
Warning: don’t give out any information. Including confirming your name or other details, if they insist ask them to give you a number to call back but check it’s authentic first! Lastly if you get a robot call or similar and they place you on hold before speaking. Hang up as they could be using your mobiles location depending on your phone settings.
Help by registering numbers on this site
Good luck honest mutuals