Amantra 100% Cashback policy terms are as follows:

Cashback can be claimed once for each customer after their order is delivered.
The cashback amount shall be the exact amount that the customer pays on their order upto a maximum of Rs. 999
Cashback shall be credited to the customer account only after successful delivery of their order.
Customer can use their unique cashback code in a future order of minimum cart value Rs. 1599.
The Cashback code used in an order cannot be clubbed with other discounts on the website/app.
The Cashback code shall expire 60 days after issuance.
The Cashback code shall expire if the customer returns or replaces their original order.