We appreciate you raising this concern to us. We're sorry to learn about your recent experience; hopefully we can turn it around.
NBN installation can generally take 10 working days however, we still provide a timeframe of 2-30 working days as there are different service class types for the NBN technology. As you are aware, NBN Co is the wholesale provider of NBN services therefore, ISPs are subjected to their connection timeframe as well as scheduling and they accept requests in the order they are received.
I've found your account using your Community details and having had a look on the recent update, the issue is now raised to NBN Co.
A Complaints Resolution Case Manager will be assigned as a sole point of contact and will be in touch with you to work towards a resolution. Kindly await feedback via phone call or SMS.
We apologise for the inconvenience caused.
Please don't hesitate to reach out to us again should you require further assistance.