I accepted an offer for a free book from the Healthy Back Institute. I was asked to give my credit for shipping costs. I later found out that I had been charged $19.95 (3 months in a row) for their newsletter. I did not want there newsletter, and had not read it. It just came in the mail and I thought it was junk mail. When I asked to be refunded the charge, they said they had sent me an email (which I never read-thought it was spam). Because I didn't tell them I didn't want their newsletter, they sent it and I had to pay for it. They never did refund me my money. I feel they fraudulently used my credit card (charged it without my permission) and the online offer for a free book was only a method of getting my credit card number. There customer service representatives, including the supervisor, were very unresponsive.