Byju's — Cancellation of online Tuition Classes of my son Dhairya Thakur class 7th standard

Respected sir
I have joined my son for Tution class through byjus, but before two month back my son Dhairya Thakur suffering for fever and typhoid and says I am not interested to join Tution Classes in future and also say I am not learn through online study. After that I have writing so many email to byjus but byjus say you can not cancel the Tution class. It is not in policy.

Sir it’s my humble request to you kindly help me out. I got mental harassed because Byju’s team is not cancelling my course and wanted to take rupees 66000/-. It my hard work and honest earning.
Sir Kindly Instruct Byju’s team to do the needful and cancel my E- Mandate and also refund my registration fees. I along with my families will be grateful to you
Regards
Diwan Chand