Class A vandalized on roof

We have NO idea why someone would do what they did. We live in a small town near Peoria & let's just say the criminal element is working it's way into our area, sadly. We called the insurance & so far, they've come up with $11,000 in damages BUT they only want to pay for a partial roof repair - it's a one piece rubber roof - how is that even possible? They also only want to pay for a partial headliner. Our TV was literally sitting in water, along with the antenna thingy, a dvr, & whatever else is up there in front but the adjuster didn't really address the electrical issues we could have from the water damage to the dashboard, not a word about the flooring which is bubbling up, nothing about possible mold, the thing stinks to high heaven because of mildew & no mention of cleaning anything either. Oh & the soonest we could actually get it into a repair person around here is August at the earliest. Our whole Summer is ruined by then without our motorhome. GRRRR!!!