First of all this so called company is nothing but a well orchestrated scam. They prey on older people who get intimidated by these dirt bags. The fact there is no return address or contact info proves they are scum. My wife received unordered books from these thieves. What I did is found their contact info on this site. just browse the complaints. I called them and asked where is their proof we ordered from them. They couldn't give an answer. They sent a prepaid return label to return their trash. Now here is the important part! When you return this junk ,spend a few bucks and send it certified, "Return Receipt Requested" This is very important! That way when they say they never received the stuff you have legal proof they did receive it . Document and save everything! Forever! Make it clear when you talk to them that they are "never to send you anything more" Be professional and firm.
Also I see people say you just keep this stuff! Yes its legal to do that! But it puts the ball in their court to bill you and harass you! also mess with tour credit! Remember your dealing with well organised con artists.