Byju's — Refund

I purchased byjus subscription on 15 may2023. On next day ii request them fo refund, because course was not meeting my expectation. It has been 15 day they haven't refunded my amount. For book they told me that they will refund 950 rupee because their printing press is not working. So i request to cancelled the subscription. But these ppl are manipulation and not giving me my money.