Signs or no you have no case. The fans blew the cover off in the course of their intended operation. This would very different if say the boom had hit your car because of improper operation. Your car is just flimsy.
Get a quote from a body shop...
Also this is not a 700 part. a cursory search shows that. More like 40.
I have no idea why you think you will get triple damages. Use your brain on this one instead of righteous indignation.