Byju's — Payment issue. Want to refund my money

I subscribed and purchased a product from byjus 14 days before.As per policy the request of cancellation should be raised within 15 days.
Byju's representative told us that there will be 4 online class in one week but only one or two classes was conducted. Sometimes mentor not present in the class. We truly disappointed with byju's. Please I request you that return my payment and cancel my subscription immediately. please do the needful at the earliest. hope justice still exists.