My RV runs on 30A, but I carry a 30A-20A dogbone and a 30A-50A dogbone with me. If I have to use one or the other, it gets me through the night. Sometimes the 30A receptacle is just worn. The next morning, the CG owner/operator gets a chance to fix it or I'm gone. They may not know that there's a problem so they get the one chance. Its only happened twice in over 10 years, and both times I was moved to a different site.
But if you're in a local county/state CG, you may be dealing with folks hired for the season, so its just a job and doesn't pay enough for them to care. Finding somebody that does care may be a long distance call.