I called back and an automated message said they were calling about my Origin account and to follow the keypad options to enter my details - obviously a scam to gain access to my details as I don't have an Origin account...scammers phishing for details.

2 missed calls but they are not leaving any voicemail so I won't ring back

at least twice a day they call every day

Caller: Origin

They call on this number and then a private number immediately afterwards.

Three missed calls today alone, no message left. Used to receive a lot of missed calls previously, they must have missed me not answering!!Comes up as' suspected fraud' on my phone. Am going to block their number.

Caller: Origin Energy

New phone (??) of Origin Energy, trying to push gas / electricity to an existing client.
Just block

I rang once and got disconnected