Complaint Review: Sharper tone skin cream

I got an email requesting that if I took a short survey to evaluate service from Amazon then I would get a free gift. After the survey the site had several things to choose from and the skin care and eye care samples were listed. You would just pay 0.99 and 3.99 for shipping for a free sample. You must check the box that you are over 18 years old. They they sent me 2 samples and 2 weeks later there were 2 charges on the credit card for $99.00 and $198 that I did not authorize. I have disputed it with my credit card as a scam. I called the ompany to sent the merchandise back but they won't accept it. They won't remove the charges because they said when I checked the box that I am over 18 y.o. I was accepting their terms and conditions. If that isn't a scam I don't know what is. I have told me credit card not to pay them.