are plumbing leaks after foundation repair common?

When I bought this house a few years ago there was small crack in the concrete slab- the home inspector and contractors couldn't tell if it was a shrinkage crack or result of settling(very common in the area I live in). The previous owners ended up putting some underpinning piles under one corner of the house. I think when that corner was lifted the drains connecting to the shower and tub (the bathroom is at the same corner) were misaligned, because we started having problems with the flooring coming up and carpet stains. Now I have to redo a lot of the plumbing and the doors won't shut properly. I read the foundation repair contract and it says they are not responsible for plumbing issues that arise after underpinnings are placed. Should everyone who had underpinnings put in have an inspector come in and look at all the plumbing again to make sure there are no new leaks because of the movement?? Is this normal? Is this common?