Regrettable. I have made my first online order of ...

Regrettable. I have made my first online order of some books. He bought them on 11/27, they are supposed to come in two parts. Today I receive the second part and to my surprise the order is incomplete. He called to say what is happening and they tell me they send it back to me. I tell them no, that they return my money, that the delivery deadlines have passed and that they have asked for the book. And they tell me no, and to top it off that when I receive it I cannot return it that the only way is to reject the order ... What if it is a gift and the person wants to return it? Well, he eats it. A shame. The first and last purchase.