There's never been a recall issued on an Isuzu-produced vehicle, but all manufacturers issue Technical Service Bulletins to update servicers of improved techniques and procedures for maintaining vehicles in the field. In looking up the TSB list for the 1999 VX there is an updated piston ring installation procedure. You can view the list here: Technical Service Bulletins for 1999 Isuzu VehiCROSS.

Unfortunately, you can no longer view TSB's without a subscription. I would imagine they would at least hone the cylinder with a ring job. You can get away with that, and while not the "ideal" way it's often the common way. There's not really much to replacing rings, just pulling heads and the pan to gain access to the rod-ends and pistons. Everything else is just left in place. A good idea would be to get some feedback from other customers if possible to find out the capability of this dealers shop and the mechanics there.

It's truly unfortunate you've got a 6VE1 with problems, but considering the shear number of these engines produced (hundreds of thousands) it's just a matter of odds.