Automatic message claiming to be from visa stating that has been fraudulent transactions on my visa card. I don't have one...

Caller: (07) 2143 6136

Tried calling back and no ring tone

scam

Claimed to be from Amazon advising a fraudulent transaction and that someone logged into my account. Provided a OTP code that came up as from Amazon.
I said I was busy. And then changed account details just to be safe.

Caller: Scam

Said they were from paypal. Hung up instantly.

Scam!!!

Caller: Brenda from ANZ bank

Said someone had authorised $1000 withdrawal from my ANZ account....don't have one!

Caller rings and as I did not answer not knowing the number, I let got to voicemail. No message left. Suspect scam call as per above - thank you OP. Blocked and deleted.

Claimed to be from PayPal asking if I authorised a payment of over 600,- which I haven’t. I just hung up. Seems to be a scam.