Warning! I think this was a scam - was an older sounding man with an Australian accent - he said I won a prize that I don't remember entering (iPhone, travel voucher or Bunnings voucher).
He then asked me to confirm my personal details. When I said I didn't feel comfortable they just ignored me went on to the next question.

Just hangs up

The usual delay after answering while my outbound dialer call was connected to an operator...they they hung up. Must have wanted to go to lunch.

Scam. They didn’t leave a message