Byju's — Not taking return or refund request

I have taken scholarship programme from Byjus, they said i[censored] don't line the product u can cancel it anytime within 15 days . But their was no response from them after the date of delivery . We tried several timea to customer care but they dint took our request ahead .

We contacted through mail calls but they don't took request for return or refund .

We paid almost 67000 to byjuson 8th Jan, items got delivered on 12th Jan .
We don't want this programme and want our refund.

Pls help us to get our refund on time . It will be a great effect on brand like Byjus and I will mke sure none of my friends n family opt for Byjus for their children's