Spoofed Optus numbers being used to scam - Telcos need to do more to stop this. You can hear the click/switch to an Indian call centre when you pick up. But should you ring back, the recording says this Optus number is disconnected. Blocking does nothing, they just ring on a diff spoofed number the next day. I know no-one that picks up an unknown number now...if no message left, it's suspect.