You're In Charge of Cleanup
The problem with plumbing is that the pipes aren't typically above the floor where the plumber can easily access everything. Sometimes, there needs to be some demolition work done in order to get the job completed. Unless you've had a specific conversation with your plumber about who's responsible for this kind of mess, you're going to have to fix it yourself. Like we've said before, a plumber's job is to repair your water problem, not to rebuild the wall he was forced to take down in order to do it. Initiate this kind of conversation early so you can plan for any additional workers to be on the scene once the plumbing is in order.