DAR Waterfront & Associates Trying to charge me for a product that was returned Sherman California

I order and day and night serum for my face. Only had to pay shipping and handling charges. A month later they was charging me againg for the 2 serums. I contacted my bank and stop the charges. a few days later received the product in the mail again. I returned to product back to the company. I didn't agree to get this product on a monthly basic. after trying the product I wasn't happy with it. Know I'm receicing a bill for both products that I didn't want, and returned back to them. I'm not going to pay for a product that was returned, and that I did not order again, and that I didn't want.