VE Series II Commodore needs master cylinder

Why did you ask for then brakes to be checked, was there a problem with them? It's most unusual for a master cylinder to need replacing at such low kays it must have been faulty. There's no excuse for Holden not to have the part available, if the dealer can't help go direct to Holden's customer assistance people and enlist their help. Perhaps you could suggest they rat a part from a new car sitting on the dealer's lot if the part can't be supplied quickly.