Caller: ADAM - worker from unknown company

Called and identified himself as 'adam' - a worker from a private company. Asked if I had a neighbor called 'shelly' - his company has lost contact with her - a customer and had a message to give her. He could not disclose any more information other than his first name. Would not disclose the companies name for 'shellys privacy'

I called back number (08) 6214 4570 rang once then gets disconnected automatically.