Byju's — Online class registration cancellation

Dear Sir/Ma’am,

My ward Prakhar Singh is enrolled for BYJU’S online classes. From fee perspective I have opted an EMI option of an amount Rs. 5339 which is already paid until April-2022. Due to this Pandemic I have already lost my job and still struggling to get new job so facing monetary crunch. Hence I am not able to arrange money for further installment.Therefore i requested them to cancel the registration of my ward and stop ECS but they are not listening. Please help.
Note: I will return their asset.