Scammer

Unfortunately answered. Foreigner voice, put phone down straight away.

Guy said that he was from NAB ~ he told me someone transferred $800 from my account and I had to download an app
SCAMMER as nobody would call without confirming details etc

Seems like an automated caller - I got 2 missed call notifications for the exact same time but it only rang once and hung up. BLOCKED

Caller: SPAM

When you call back you get a recorded message saying that the number is not in use. Meaning its not a legit caller.

Caller: Allegedly Amazon

THIS IS A SCAM CALL! Please report it to Scam Watch. I truly hope you didn't give them anything. When I answered, it was a recorded voice saying they were from Amazon, calling about an Apple iPhone purchase from my account. At that point, I knew it was a scam, so I hung up and didn't wait for the rest.
This scam has been operating in the US for a while, it seems. Article here. https://screenrant.com/amazon-imposter-iphone-scam-phone-call-avoid-explained/

Be careful out there every one. :-)