Unprofessional, Rude, Incomplete work after being paid in full!

Not only are they not able to meet their own deadlines, but they are rude and completely unprofessional. They are yet to complete the varnish on our jungle gym, which has been fully paid for, AND the slide has already broken, almost injuring a child. It is not even worth it contacting them anymore to correct it, so we have hired a private contractor to complete and fix what they could not do themselves.