Of course, since you are sure that you are missing a book, what are you afraid of? ! Click on the right to complain.
To tell the truth, I am a seller myself. I have experienced hair loss myself, and then I will know if it is short by checking the weight a little. When this happens, solve it immediately: 1, and reissue it for him. 2. If the postage is really uneconomical, negotiate with the buyer for a refund and refund the less delivered items.
After all, doing business in bad faith, the other party confirms the receipt of goods, and everything is badly evaluated, which has a great impact on the store. Be honest with each other and be honest in business.
You make it clear to the seller, and I think he will definitely solve it for you.