Lux Style International Threatening legal action for sending a product I didn't order and not even to my address. Denmark Nationwide

I visited the Lux Style website as advertised on Facebook.  After looking at the site the product price wasn't listed so you had to fill in all your information to see the eyelash serum price. After I looked at the price which was a demo product, but they wanted a credit card and payment of $79.85 so I said unreal for mascara and back clicked out.  So I didn't complete the order. 

However, they keep sending my threatening letters and to my x-husbands address which is not even where I live????? 

This scamming needs to stop! Please crack down on companies that are trying to bully payment out of people for products they haven't ordered. 

Thank you!