Byju's — Regarding cancellation and refund of course fee

My self pradeep asnani, I have brought 3 years course from Bujha. The study material received on 4/6/2021. according to terms and conditions, I have requested for cancellation of program and refund of fee with in 15 days. The mail was sent on 14/6/2021. Byjus authority has not cancelled program and not refunded the amount till date. Many executives call me in this regard but solution of my grievances has not been addressed and solution not provided.