Have you checked your monthly bills lately? This a very common practice for all business not just RV parks. Dish sent me a complete new FREE unit then charged me. Costco has big sale and they slipped in regular price. You have to really be observant and challenge them. Dish reply? Oh just a billing mistake. Costco reply?. If you come up to our desk after check out we give it otherwise it doesn't get applied. You have to question every fee or bill you pay in the 21st century. There are no more honest business practices.