Fast Deals Today — comfy cup

My name in anna luise fabbri. I ordered a comfy cup on the 2 of february 2020 and i was charged 4.95$ (Free shipping) for it by fast deal today. I authorized that payment but no others. Nowhere in the e-mails you sent me there was written that you would charge me for something else yet my card was charged by you with 13.59 € on the 3 of march 2020. I didn´t buy anything else from you, i haven´t authorized any payment to you. If you somehow got me to inadvertently agree to a subscription, i want it canceled. I demand a refund and that this never happens again.
I´ll wait for your answer.
Anna luise fabbri