Amazon India — not delivered my booked item

I have booked a together with Hindi book of class 9. Track Id was [protected]. Expected delivery date was 20 August. But on 20 August at about 6 pm I found that the book has returned back. There was no phone call from the delivery man. But the reply we i got as the customer refused the order, which I hadn't. At night on the same day I chatted with the customer care and told the matter. He told that the book will be delivered at 9 pm on the same day or the next day morning. I am still waiting for the book. Can I get the book or not?