Once I went to Boku to buy books, and after a few days, I found that the purchase was repeated. I applied for interception. In fact, almost all the logistics inspection documents are in my home, and the prompt is that the interception failed. I asked the buyer to contact the courier to send it back. I waited to receive it, but I didn't see the courier deliver it to me. Later, the book came back automatically. I thought the courier fee for returning goods would be deducted automatically when the refund was made. After a few days, the mobile phone prompted a refund, only to find that the original amount was returned. I think it's quite trustworthy, but it may take a little longer and the service may be improving slowly.