Camper in Garage- help with height please

So... We had a bit of a misunderstanding getting this thing started. They misunderstood that I actually expected them to meet a time schedule and I misunderstood the whole whenever we get there will be fine attitude. The April call stating May became June (which is when I started this post in anticipation of "Next week". The end of June and I threatened to cancel and sue them. 3 days later the truck pulled in. The crew were very hard workers and did a professional job. The afternoon of day 1 and I went outside to take a look. Hmmmmm... That looks great but it looks a bit on the short side. They had 1/2 of the trusses up and in place when I pulled out the tape measure. Our language barrier made this next conversation a bit difficult. The walls they were putting up were only 8 feet. So once he understood what I meant he called his office, I called the office and they sent new wall posts up over night from PA.

The site before they arrived:




The site with the oh-oh it's too short walls:




The new and improved 12 ft walls and the OSHA would sh-t safety photo (yes they would stand on the top step, walk around the trusses and metal roof in the rain with out any safety gear- at least the orange shirt would make it easy to spot him falling):




They finished with out getting hurt and are gone. My youngest for comparison is 6-3 and 215:




They were gone maybe 10 minutes: