Proactive Solution Guthy-Renker Proactive Solution Unauthorized Charge Nationwide

I bought a Proactive Solution product from them in June 2014, they are charging my credit card again without authorization, I called the company and they told me that the first time you buy something from them, automatically they continue charging you. They told me too, that if you don't want their products, return it and in six weeks they are going to adjust the charge. My bank is charging interest for this charge. It looks like a scam, there are hundreds of complaints against that company, may be is a good idea to summit a class sue. Thank you.