-
True, but they can arrange for work to be made good.
At the very least they should talk to the client / pm before proceeding and making mess like that. If I did that without authorization I'd expect the client to be pissed off.
@rj from those drawings (I still don't have the whole picture, there could be valid reasons why this has happened) you should be able to access from above. I have no experience patching lath and plaster so can't be much help there I'm afraid.
Many sparkies are just that and won't make good after doing any invasive work required.
What did you agree @rj ? Was making good included in the quote?