I used to work for this company and I can offer you an explanation as to why you are charged on your credit card when you weren't even solicited.
First off, they buy lists of people's names, address, telephone number, and also they obtain their credit card information! This is completely illegal if they keep the credit card information on site instead of having it secured at a third party location. They may tell people that they have access to only the last 4 digits of the card number for "verification purposes" when in reality they are staring at the WHOLE CARD NUMBER! WHOA! Big trouble! And what if the peron looking at the card is a thief and wants to order something offline? Whoa! More trouble! The whole company is totally crooked and they seriously need to be in major investigation by the FBI. If there is any attorney generals or people who want to get together to file a class action lawsuit contact me at firstname.lastname@example.org and I will testify in court!