I rang this number back after missing the call the previous day and the recorded message says this number is not connected.

A recorded female voice said goodbye

Answered this number, was definitely an overseas call centre claiming to be commonwealth bank security department. I just hung up.

I hung up and did not return their call and blocked them

Unknown number. I blocked it after reading this post. Thanks everyone.

I answered a call from this number and the guy, who was clearly in an overseas cal centre based on the noise and delay, started to say that since I pay my electricity bills on time, and then the call disconnected.

I received a call today 4.14pm I did not answer it my phone check the numbers and told me its a potential fraud so I blocked it

Answered call. No one spoke initially then a recorded female voice said, "goodbye".

I've been getting several calls from this number today (4/9/19). Haven't answered.

After answering a female computerised voice said goodbye. What is the point of these calls. Number is now blocked

Caller: ‭0419 712 386‬

Same as everyone else I said hello after few seconds they said goodbye

called also by this number today. Got the automated voice saying "goodbye". Put it in my blocked list after reading the above.

Just heard a robotic woman's voice saying "Goodbye" and they hung up.

I called back number 0419 712 386 rang once then gets disconnected automatically.

Caller: ‭0419 712 386‬

Everyday a missed call. When I return the call says disconnected

They called me I answered it had a robotic voice after saying hello a couple times then it said goodbye rang straight back to be told not connected sent 1 txt it worked then couldnt txt it after the 1 successfully went through

Same i rang this number back and it says not connected

Called twice today, first one didnt leave a voicemail. Second time I picked up, said hello.. then all i got was a "goodbye" in an automated voice.

Automated dialler?

I picked it up quickly enough to have three bursts of static and then that automated female (Telstra?) voice saying "Goodbye". Can't give more infor than this - I never return calls from unknown mobiles.