Grant, I guess you dont have to use sh1tty 3rd class ADSL Broadband. ill agree with one point is yes it is a waste of money the way current Lib/Turnbull government is doing it.
All i can say is BRING ON THE NBN.

I called back number (02) 8488 8390 rang once then gets disconnected automatically.

it's some mob trying to talk you into getting ready for the NBN............biggest waste of tax payer money to date so I told them politely to F*#K OFF !

I don't answer a call that is not automatically identified on my mobile. No message was left. I identify numbers like this in my mobile phone as a scam. It's likely to come from an auto call device hence no message. The pattern is to call three or four times.

Disconnects on Callback, guessing a telemarketing line.