A phone call registered an incoming call from the number (02) 9067 0539 on my mobile device yesterday 6th Jan 2021 5:27PM - no message was left in my voice mailbox. I rang back and received the recording "number has been disconnected..."

I wonder what sort of insect/bug was trying to get in touch. Now I have insecticides all over the place... I'm going to knock this "thing" non-alive.