Persistantly ringing, texting and messaging saying I owe origin $1395.36 and want to arrange a payment plan. I don't have an origin account

I don't have a electricity account with origin and as they are the only gas provider in mount Gambier I refuse to pay since you have disconnected my gas you will need to reconnect free of charge if you want to see any money from me ever again

No message left. I do have an account with origin but it’s with a different debt collector, this one is a scam

Constantly calling me since getting new phone number through work. Debt collector saying that I owe them money for an origin electricity account. My energy is via AGL and always has been. Block the number as they are rude and won’t take no for an answer.