RPM Motorsports denying damage

So I had my bike in at RPM for a service on tuesday and it went way bad. I had them flush and replace all my fluids along with the normal service. So I get the bike home and see what I think is a large scratch directly above the rear brake resovoir. I look closer only to find out the fairing is cracked all the way through and about 3-4 inches long. I called them PISSED and the tech is denying he had any issues when he filled that rear resovoir, what a surprise huh?

This is the 2nd time RPM has damaged my bike. What can I do? I have recent photos proving there was no damage prior to it going to them. Any suggestions?