Called in the middle of the day from an interstate number. I wasn't expecting a call and it was 2 digits different from a known charity caller number (number ending in 9541) which called the day before. I didn't answer and no message was left. I believe this to be a charity caller.

no message=blocked number

Hung up as soon as I answered

This number called my mobile phone at 8.38pm. The caller did not leave a message

Called tonight at 6.30, said Sydney based number. I didn’t answer, they left no message.
Spam no doubt!

Called mid-afternoon. Didn't answer as number unknown. Didn't leave a message.