All of the above from Kaindub is true. I was reading between different lines and assumed (I know… I know …I) that the correct procedures had been followed but the process delayed (references to a “separate NCAT dispute”, etc).
If NCAT has already ruled that the UEs should be altered, I think you have strong case to ask that the levies be changed too. If NCAT hasn’t made a definitive ruling on the new UEs ruling then, as Kaindub suggests, you are pretty much back at square one.