RANDY'S INSULATION & DROP

I contracted with them for 6" open cell foam insulation to be sprayed onto the side walls of my shop. They finished and left the bill taped to the door. Upon inspection when I got home from work I could see about 50-75% of the walls only had about 4" of insulation. I called Randy the next morning and he sounded irritated that I didn't think it was good enough but he did send someone up to fix the problem. He said I would need to be there after he was done to approve it, I agreed, They called when they said they were done so I went out to inspect and they had only touched up a few places. The guy argued that I didn't need all that insulation and it wasn't an exact science and if you overfilled it you would just have to cut it off and with the knife they used it would dip in an inch and a half so I wouldn't be any better off it would just waste insulation. He also said I had 7" in places. I have 2x6 studs with 3/4 fur strips the tin is screwed to so the walls are 6 and 1/4" thick. Well he thought the three 3/4" ribs on a 3' wide piece of tin used an inch of insulation thickness!! He finally agreed to fix any areas that I pointed out. I showed him several. I had to get back to work and gave him a check. When I got home it wasn't much better than when I left. I spent 2 hours the next Saturday morning cleaning up the insulation that he didn't sweep up. I am considering contacting someone else to come in and finish the job.