Glucosulin HResource Automatically charged my account after verbally agreeing to no future charges without my approval. Placentia,, California

When I ordered the 'shipping only' trial product I specifically told the phone rep. that I would not give my credit card number if I was going to be automatically charged.  We agreed that I would contact the company if I wanted to continue.  This morning I see that I am charged $99.96 and called them.  The first rep. hung up on me.  The second rep. told me that if I read the fine print on the invoice I would see that they could legally charge me for the product.  All they would offer to do is send my complaint to "customer satisfaction" and I would hear from them within 30 days.  My bank will not dispute the charge because the invoice fine print said I had to return the unused product within 30 days or I would be charged.  According to their information, if I pay this 99.96 charge I am approving continued shipments.  I consider this dishonest sales practice for an over-priced product that is in the most part just fiber.  If there is more that I can do, please let me know.