This name rang me, I picked up and they asked 'is this my name' and I said yes and then they went 'ohh' and then hung up.

The caller did not leave a message. The "suspected scam" message was displayed on the phone screen.
I have been receiving many calls from numbers: (02)8252xxxx but, of course, I block them.

Left a message - Some inaudible whispering, followed by a few notes on the piano, overall lasting about 15 seconds.