We appreciate you raising this concern to us.
I've managed to locate your account and based on the recent update, NBN needed to reschedule the appointment due to technician capacity issues.
Please be advised that ISPs rely on NBN Co to provide NBN services therefore, we are subjected to their connection timeframe as well as scheduling.
For help about how to check your scheduled installation date or to reschedule your current appointment date, please visit this Community Article: Check or Reschedule Your TPG Installation via tpg.com.au/install
We apologise for the inconvenience caused.