Byju's — Refund

I've been trying to contact Byju's team for last 6 months, but now no proper responce is there from them.

I've buy Byju's study class for my son Sarthak for four years (7th to 10th). For 7th std it was smoothly going. I paid all fees for four year in installments in one year. But as I paid all money, there is no proper responce from Byju's team.

So now I want my money back. I've all payment details and call recordings, malis as well.