That kind of response takes my breath away, where the integrity, if he readily accepted the wall plates were wrong then why try and get away with it?? Just get the hands up, admit it and get it sorted.
As far as the holes in the panels are concerned then that's a personal thing, if you're not happy with it then he needs to fix it. Simples.
As far as the holes in the panels are concerned then that's a personal thing, if you're not happy with it then he needs to fix it. Simples.