My plumber left a huge hole in my kitchen, what do I do?

I recently purchased a home and hired a plumbing contractor to come and connect the pipes under my kitchen sink. He said that he would have to re-route the kitchen plumbing to a different plumbing "stack" in the basement. The problem is that in doing so, he completely ripped out the wall behind the kitchen cabinets in order to install the new pipes. Now I have nice new pipes and a huge hole in my kitchen wall. Should I request that they fix it or do I need to hire someone else to repair my wall? And what type of company would I call to fix this? I only have two weeks left before my new occupancy inspection... please HELP.