I seem to always receive unknown calls from 0480 number very soon after I receive a unidentified 02 landline call? My new rule is "ignore and block" all unknown calls. If they are legitimate, all callers have the capacity to leave voice or sms messages to state who they are.

This I have been warned in a scam number

Hung up when answered. Called back and it says number disconnected

Hung up straight away won’t connect