Contact your bank, and explain this to them, and tell them you want to "dispute" the charges as unauthorized. Ask them to help you end the charges and maybe get some of your money back if you return the product unopened.
Have you contacted them on their site's Customer Service page? It seems to be able to stop shipments, return products, etc.
Their web pages:
Found on the Terms & Conditions page:
"Return Policy. We will credit one returned unopened product per customer if received within 60 days of the purchase of the trial sample. No returns are credited after 60 days from the order date of the trial product. Merchandise must be returned at customer's expense. Absolutely no returns are credited for opened or partially used products. The sample's shipping charge is non-refundable. In the event that the product arrives damaged, please email our Customer Service Department via our contact page within 48 hours. DO NOT DISPOSE OF ANY DAMAGED PRODUCTS OR PACKAGING until you contact Customer Service for instructions, as we may require return of the damaged goods. In these situations we will promptly send a replacement product and a pre-paid return label to return the damaged merchandise.
No refunds on any packages that come back "Return to Sender".
Please return all product to:
PO BOX 971090, Orem, UT 84097, United States"
There you are - the address for returns. One interesting note - they claim that all legal filings shall be under the rules of Arapahoe County, AZ - but there is no Arapahoe Cty in AZ. There is one in Colorado.
I found this info in less than 10 mins. right on THEIR website ...