@creative_writer yeah I'm in touch with the Centrelink complaints line now after failing to get through to the DSP line after more than 50 minutes of waiting in that queue. I hope the complaints line are at least able to action my study details updates though, fingers crossed.

It might be a good idea to follow up with them in case if you feel that they might've missed or forgotten about you. If you booked a phone appointment online to speak to them they should be able to get back to you by then.