I bought a book from the bookstore but accidentall...

I bought a book from the bookstore but accidentally ordered the same book from Amazon all from their website. I shipped the book back for a return but they wouldn't accept saying it's over 2 weeks. So they made me waste about $150. They also wouldn't buy it back. Very disappointed. It's not like I could drive the to return it since I live out of state in Georgia. So I think they are not doing fair business. I will not order directly from their website again unless I absolutely have to.