Byju's — Refund

I bought the 4 year package and I'm not satisfied with it. There is a 15 days refund policy. My 15 days weren't over yet and I wanted to cancel it. The counsellors are very cunning, I never wanted to buy it, they manipulated me, they kept on saying atleast give it a try and that I can cancel it within 15 days from delivery. I have recorded my coversation with him. I called the counsellors who made me buy this but they never respond to any calls or text messages. I called on the customer care number of BYJU'S and even emailed them for 8 days staright and everytime they said that I'll receive a call back within 24hr, but I never did. Now there is like 1-2 days left. I just want to cancel it and get a refund. It is very disappointing. Didn't expect this kind if sevice from Byju's.