Bookwindow - Book not delivered and not even responding to call for refund

Dear KULDEEP KUMAR

You have successfully made a payment of ₹ ***.** for your order on BOOKWINDOW using Atom Gateway. The Atom Transaction Reference No. for this payment is ************** (details annexed below).


Transaction Details
Merchant Name: BOOKWINDOW
The charge will appear on your credit card / Account statement as BOOKWINDOW
Transaction Date & Time ****-**-**T**:**:**
Merchant Transaction Reference No. ******
Atom Transaction Reference No. **************
Payment Mode DC
Bank Name State bank Of India
Amount ***.**
Customer Name KULDEEP KUMAR
Customer Email Id kuldeepkumar*****@gmail.com
Transaction Status Success

For any queries, Please contact the merchant BOOKWINDOW

Regards,
Atom Team

PLEASE DO NOT REPLY TO THIS MAIL AS THIS IS AN AUTO GENERATED MAIL AND REPLIES / QUERIES TO THIS EMAIL ID ARE NOT ATTENDED
This is the only mail related to bookwindow which i got from admin@atomtech.in for payment to bookwindow.
Please help me give me my refund please it's a humble request.