My family and I decided to go to Pismo/Oceano camping this weekend for the first time, when we arrived at the States Park window to pay, we said we would like to camp tonight, the gentleman said ok and requested the fee. We put the little taped receipt in the window and went on our marry way. Well this morning I received a parking citation in my window for $300. I went to State Park window where we started and explained the situation, the park Ranger said we are all sold out and you paid for a day use, so if you have an issues you have to write a letter to contest the citation. So not knowing my rights I'm asking for any help to fight this. Thank you.