Disappointed!

Disappointed!
I am a regular customer, today I bring back a book, impossible to reimburse me apart from a voucher valid for 4 months! NOWHERE is it indicated that a refund is not possible. The law stipulates that if nothing is indicated, they are obliged to reimburse!
Also, I placed an order this Monday for a book. I phone yesterday and they confirm that I have received it! Today by going there, no trace of the book! They did not receive anything! Not even an excuse, apart from offering to recommend ... I am really disappointed!