I don't post very often, and certainly not in this area. But I read these forums regularly, and have done so for a long time. I want to make a few comments, both specific to the issue and more generally.
Specifically, it is true that a merit badge blue card can only be signed by a registered merit badge counselor, and then must be countersigned by the scoutmaster. So if there was a question or problem with the work done, it would have been incumbent upon the scoutmaster to take the blue card and tell the scout he will get back to him. The the SM could call the counselor, and ask any quest