Don't answer.. its telemarketers. When you try and call back its says number disconnected.

missed call tried to call back surprise the number is disconnected

Likewise returned this call and Optus advised that the number has been disconnected. How do these telemarketer companies do it ??????? Don't answer it, just block the number.

If its important they will leave a message. No message, no return call.

same here

same have rang me 4 times over 2 days when i returned the call its disconnected

Someone from this number called me this morning. When I answered the call it hung up/disconnected. When I called the number back the voice recorder
said the number was disconnected. I am curious as to how this can be?

market research

Same today for me

suspect spam

Someone keeps ringing me and when I try to return the call Optus says it is disconnected.