Why won't my Rabbi and my parents believe me about what I've been seeing?

I told my parents today about how I have been seeing Adolf Hitler's ghost and they didn't believe me. I went to the Rabbi and asked for help and she didn't believe me either. Now I have to go to psychological counseling and I really don't want to. Do you think the counselor will believe me? I really have seen his ghost, it's in my bathroom and it peed in my floor.