Answered the call, someone mentioned they were from "XXX House" or whatever organisation, with Indian accent so I cannot figure out what they were saying. When I pardon them to repeat, they just hang up. Most likely is a scam, but I wanted to clarify where they were calling from because they used my legal name, which is unusual, so I want to find out how they know my passport name. Worried...

Recorded message, said my phone would be out of service today, i hung up and then blocked the number

Didn’t pick up as I wanted to. Check the number. Knew it was spam. Get these everyday calling from different numbers.

Called, didn't leave a message. Suspect scam

Answered when they called despite suspected spam notification (waiting on call from company). Claimed to be from Telstra regarding my IP address. I don't have Telstra accounts so hung up.

No msg.

called me, no message. I called back, call failed to connect which is a classic sign of a false number being used.

Missed call labelled as Potential Fraud - nil message

Missed call phone marked as suspected spam.
Nil message recorded