unknown unsolicted supposedly from Sydney. No message left did not answer

Caller: NBN

Claimed to be from the NBN, asked a few questions which was " what was the IP address in question" she stumbled around that , then I asked what number she was trying to call " she read out my Mob number ", then when I asked what was the name on the account associated with it " she hung up " :)

Caller: Amazon Prime

Saying my Amazon prime and my account is about to be debited. I don’t have an amazon prime account

Scam caller pretending to be internet provider

Caller: Says was from cba

Indian voice Said was from investigation team at cba and detected fraudulent transactions on account
When I asked them to speak slower and more clearly they hung up

I just got a call from this number and they did not leave a message. I suspect they are spam.

Don’t waste your time.

Caller: Amazon fake caller!

Claiming I owe them money! 100% spam.

Called just now left no message....weird

Called and didn't leave a message. I called back and all I got was an engaged tone.

Auto hung up when a number from Singapore all of a sudden called at the same time of the hang up. 100% spam