You need to speak to someone with authority.
If you fare is high enough, flaunt it. I was not shy about it.
Once of my flights into AKL was delayed ( international business premier) , and the domestic connection, ( booked to full fare Y) was then rebooked to the next day. Because that was the next availability.
I held my ground and insisted, that they bump someone who bought a cheap fare off the next flight, which they did. The Star Gold check in at the domestic terminal. The girl had to call in for approval to do it.
I don't feel sorry person who lost his / her / their seat.
There were other passengers who were similarly disrupted who were put on standby. Given that my fare and booking class was indeed the highest you could buy - I insisted that I be confirmed, which they did. Other passengers were put on standby.