Since the VX is a semi-GM engineered vehicle, check if your mechanic has a scan tool that can electronically bleed the ABS module. I know a lot of GMs can be bled this way (and in fact HAVE to be bled in this manner). I'm not sure if it works for Isuzus too, but it's worth a try. The mechanic at the shop I used to work at had a Snap-On scanned that could do the ABS bleed (he said it cost him $10,000 and seeing what it could do, I'm inclined to believe him). Basically it cycles the ABS system and will pull fluid through the ABS unit. I wouldn't try jump-starting the ABS module with a battery to replicate this effect though: you could easily fry the system.

Another brake bleeding tip is if you are replacing a master cylinder, make sure you fill it with fluid and bleed it BEFORE you install it into the vehicle. Many MCs have a small pocket behind the brake line fitting that can trap air and will leave you with a spongy pedal. It's a bit messier but saves a lot of time.

I know the manual says things differently, but remember the VX is now 15 years old. Times move on. But there's no excuse for any shop to not be able to bleed brakes properly.