Within a few hours of my original post, a Ferrellgas representative named Jim commented on the post. Via email I said I would be willing to talk to a Customer Service person. Mandy called this morning. She was very pleasant and helpful. The charges have been removed from my account. She suggested what I should do. I agreed to stay with Ferrellgas for now. I also suggested they read the comments.
She is a cat person so she will also check my blog.
Update: The Ferrellgas man came and checked my tanks. Moved them to comply with the law. Showed me how to determine how much gas remains. Said good things about Mandy and her boss. I'm pleased.