Don't know who it is so I've blocked it. I called back but a recorded message asked me to leave my name and phone number so a team member could get back to me as soon as possible, with no introduction of their own. It did not state who it was, so I'm suspicious enough to block it as a precaution.

Ring me once a week. Never leave a message. When I see a Queensland number I usually don't answer. I figure if its important they'll leave a message.