In April I ordered a "free" sample of a few Res V Pure capsules for the cost of S&H, $3.99. Now another whole bottle has been sent to me and charged to my credit card for $79 + S&H + exchange to Canadian dollars, almost $100 in total. I need to send the product back, get a refund on my credit card, and stop further charges from being applied. How do I stop this nightmare?