Caller: Greenpeace

Ringing because I apparently signed a petition (no memory of doing this), and they're looking for donations. Friendly enough when I said I couldn't talk at the moment, but keep ringing back on different numbers and from different state area codes.

I called back number (07) 3085 3650 rang once then gets disconnected automatically.

I don’t answer unknown Number calls and if they don’t bother to leave a message then I block their number as a scam or Telemarketing calls.

Caller: Unknown

I don’t answer unknown numbers & if they don’t bother to leave a message then I deem it to be a scam or Telemarketing so I block the number.

When I tried to call back line disconnected

I no longer answer calls I don't know. This number rang today, I wanted to check which it was so I rang the number back. It disconnected without ringing.

Same as above, called back and disconnects automatically