I called back number (02) 8011 3690 rang once then gets disconnected automatically.

Never leaves a message, just calls then hangs up.

Apparently called regarding government support for home mortgage. Wanted to confirm my name and asked for home address. It appeared that she had my name and phone number. I told her that if she was calling on behalve of the government then she would have my address. She said she only had my city and needed street name and number. I hanged up. Most likely a scam. I do not have home mortgage so she had no business to ring me.

Never leaves a message, just calls then hangs up.

Consitantly calls and hangs up no valid number

no message=blocked number

Have called 4 times now, never leave a message. Just tried to call and get Telstra message that the number is not connected. Weird. Blocking them.

I answered the call and they just hang up without anyone saying anything.

Calls at the same time every day and never leaves a message. Very likely to be a scam.

Tries calling repeatedly over one day then just stops. No voicemail. I have had this caller more than once.