Byju's — cancellation problem

I am anurag. One month before one of the counselor from byju's game at my home and told me about the byju's course. Impressed by his words and we took the course. He said that you can cancel order if you don't like it in 2 weeks. Now after 2 weeks i call byju's to return my tab and cancel my order. He said that i will receive a call back in an hour. I receive the call back senior manager called me. I want to to cancel the course and refund my money. She said if you want to cancel then why did you take the course. She also said that take one week extension from me and try the app properly.
I said that i am not interested in studying from byju's sources like we cannot cancel order like this we want a very strong reason to cancel order.
This is forcing me to buy buy the full course. Why should i try and buy the course even if i am not interesting in studying from this app?
Dear byju's,
Please do something about this.
Thank you.