same same i ask who is this is and i get a hangup.

Not connected. Probably a robo call to see who they can spam

Twice in two days, and call came through even after being blacklisted. GRRRR!

I got many calls in the last week from this n . There's no one on the other end.

I always never answer calls from numbers I don't know. This number has called twice over recent days. Like RD Assetts i called the number back only to reach the message "this number is not connected, please check the number before calling again".
I don't think this can be anything but a scam.

Caller: India

Constant calls non stop, every day. Half the time they hang up straight away the other half is "can I speak to your business owner"

I have several calls from this number but no one talks and they hang off

I missed the call. I rang it back twice and got the same message "Optus advises that the number is disconnected.

I had the same problem. They called, I answered and then it hung up after a few seconds.
When you call the number back is all you get is "Optus advises that the number is disconnected!"
Blocking that one

When I answered my silent house number they Hang up after I said hello twice over 6secs

Called number back, not connected. Block this number.

I answered they hung up.
I blocked the number.

Scam call? Answered and no one there, computer dialling for telemarketers?

Keeps calling then hanging up after I answer!

answered the call to a hang up... must be a scammer of some sort