Trendin.com — not received nios deled books

Address:

781121

Respected sir,
I have ordered two nos. Books on nios deld book on 3/6/2018, order id:
40640, through my debit card. Till now i have not receive my ordered book. What is the reason behind, is not known. If the book cannot be deliver than i request to pay back the amount (Rs. 430 l which i have paid through my debit card. Thanking you.
Anup kumar sarmah