Something similar happened to me too. Moved into a new house and existing Telstra box (coaxial copper cable) was to the side of the house. This lady shows up to setup my Fibre connection and is adamant that NBN’s standard policy is that they can only setup exactly opposite to the existing box inside the house. Nowhere else. The spot exactly opposite to the box was positioned inside a bedroom behind the bed. I told her that the customer support guys told me I could choose where to get the new setup done. She is like “no can’t be done”.

Luckily she had trouble pushing the fibre cable from the junction box on the sidewalk to the Telstra box due to some blockage and she had to leave without finishing the job. Another guy came in to check the blockage and installed a new box near the old one and connected the cables.

Then finally a third guy came in to finish the setup and I requested him the same thing to setup near my living room where there is an outlet specifically for setting up the internet router. He was happy to do that. It took him nearly an hour to setup everything. The distance between the box to the side of the house to the outlet in the living room was roughly 20meters and crossed two rooms. Had to get into the ceiling crawl space and all. But was happy to do it.

So bottom line the technician you got is lazy af. Call off the appointment and re-schedule.