Exactly. If a surgeon leaves a lap sponge/instrument inside you during surgery the mal practice insurance will pay out as well. You won't even have to go to court. There is a industry std. amount that they pay/settle for.
Unfortunately for you at best, from what you have posted, you have the medical equivalent of "brush marks are visible in the enamel trim" so the insurance is telling you to take a hike because your claim is BS. If you think it is more then that you are more then welcome to prove it in court - but that will cost ya! So you better really think, is the brush strokes being visible really worth it?
Those aren't a problem for me. I know contractors and I know not to trust them as a general rule. I expect this sort of BS out of them all the time. In fact a job isn't complete w/o the GC uttering nonsense about how no walls are ever straight, the color never matches, there is always a problem, blah blah blah.
I just don't go suing their bonds over stupid things like that. Your crying over this issue is the equivalent of the costumer crying about why the wall wasn't built straight and expecting your bond to pay for demo of the house and a rebuild.
Get over it or sue. If you are truly injured you shouldn't have any problem finding an attorney to take your case and get you some money. My guess is that like the majority of "injured by doctor patients" you can't find anyone to take your case short of a hefty retainer upfront.