I called back and a lady answered; I said I had a missed call. She asked if I had been in an accident lately, I answered no, she asked if there was a reference number left in the message, I said no message was left, she said "oh". I said I think this is a scam. She said just "oh ok" and that was it so I hung up.

I called back number (07) 3490 2405 rang 3 times then goes to busy tone.