Thanks for contacting us and welcome to the community, @Waikiki1,
We've managed to check your account records and it shows here that your issue is now being handled by our Engineering team. Your case has been escalated to the NBN Co due to the fault found on the network.
I'll notify the Engineer handling your case about your preferred schedule on Tuesday 27/Feb/2018 between 1-5PM. I'll ask them to send you an SMS for confirmation.