"An entity is much more than the sum of its parts."
I think I just made that quote up, but I'm not really sure. Diagnosing the problems with an engine can be a HUGE task, because there are so many interacting parts. Likewise, a symptom can appear and dissapear because of the interaction of these variables. It's truly possible that one day there was no compression, the next there was, the next there wasn't.. etc.. etc.. ad nauseum. Although it sucks that you haven't gotten your car back, to me it reflects that they're truly trying to find the source of the problem. Hopefully they don't charge you for all the labor.
And from our standpoint, its really difficult to tell you if the starting problem is even related to the compression problem.. or why they think the crankcase (?!?!) is causing compression issues..
