My wife received a bill many months ago for a book and I paid the bill thinking it was for a book she ordered. It turned out she did not order the book, it was unsolicited, and she was irate at being scammed.
My error in paying the bill caused the company to do it again and this time she has filed a better business bureau complaint (bbb.org). It turns out there are hundreds of complaints against the company and it seems to me that they are preying on senior citizens. Beware of bottomline books.