There is an error with your notification system. The email alert I have for tomorrow's outage states that it is scheduled between 10:00am and 4:00pm 28/09/2021 AEST. Whereas the NBN's website states the outage is scheduled between 12:00am and 6:00am 28/09/2021 AEST.
I believe the automated system you are using to recieve the alerts from NBN is reading the times from NBN as UTC and adding the 10h difference between UTC and AEST.
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We responded to your initial post located here. Send us your account details (Username/Customer ID together with the address on file) and we will proceed with the investigation to identify what causing issues with the service.
Emergency work is carried out all too frequently. Over the past month: on the 15th, 20th, 23rd, 24th and 29th December; again on 7th January and now today on the 14th January. The high frequency of service disruption is making it impossible to work from home. I am shocked tpg payment was deducted from my account today when I would have expected a refund.