cs-fashion SATSWAREHS paid 6.99 for watch from pop-up. then chared 99.98 on my bill. called them and they said it was a trial and I should have canceled. no where did it say that it was a trial. I received the watch in an unmarked box with no paperwork Internet

I purchased a watch online from a pop-up on my computer for 6.99. When I received my credit card bill I saw that I was chared the 6.99, then 99.98. When I called I was told that this was a trial and I should have canceled. No where did it say that it was a trial. I received the watch in an unmarked box with no paperwork. They told me that had I not called I would have received something every month to be charged to my credit card. I would not be able to choose what I wanted to get. They would not give me a refund but would send me another item free of charge. Until I got my bill I did not know who to call. I think this is a scam.