Unexpected Charges from Aspiegel on Credit Card

The amount of ₺1,428.16 has been taken out of my credit card account by Aspiegel without my authorization. Because I have never heard of this company or website before, I have no idea what it is or what it does. This is not a website that I signed up for in any way. When I look at my monthly credit card statements, it is shown as POS 0001, and there is no other transaction information included. I have decided to cancel my credit card as a result of this. If I have a subscription, I would like it to be terminated as soon as possible. It is my intention to pursue legal action in the event that all unauthorized charges are not promptly repaid.