Byju's — surrender/ cancellation of my subscription

Surrender/ cancellation of my subscription receipt no.- tn[protected] dated 27/03/2019

I want to surrender/ cancel my subscription of tablet learning program (Cbse 11-12 commerce). Please collect back your tablet and refund me my already deposited amount in my registered bank account with you. While using your product i realised it was not completing my objective and i am not able to understand anything through it. Therefore, now i have to opt for coaching classes and this product is completely waste for me.

Please collect your product and refund my money at the earliest also discontinue the deduction of ecs from my bank account.