Hi @Dan0983, sorry to hear you've had an unexpected International call charge on your bill. As you've mentioned you don't recognise the call and especially due to the destination, it's possible this has been a result of a scam. Just to confirm, have you received calls from an unknown international number and did you answer them?
Can I please bother you to reach out to us by a private message via our Social Media pages (official Optus Facebook page or Twitter page) where we'll be able to obtain your details securely and assist you further with your concern.
Alternatively, you can reach us on a smart device via our Messaging service on the My Optus app 24/7.
