contact your insurence co then the park. if neither proves and practiall information then call the news. had a simular incident where the state charged my father 10k for damage to a 20' span of guard rail on the highway. that was never fixed the highway department kept jercking me around as did the govenar so i called the news. come to find out they charged us for a 200' span of guard rail and still never did the work. at the time I was decently well off and had paid it in full. with the proof in hand I ended getting my money back with interst after the story aired. and shortly their after we had a whole hew highway department head.