Byju's — Byjus is not refund my amount

Address: 10/240 Bellum Mandi street kadapa

I have cancelled my course within the given time limit. But it has taken 1 month 3 days but I have not get my refund back . When I call and email byjus cancellation team they always told us to wait for 24 hours . And the councellor is not respond our call and messages. After giving our bank account details they said it will only take 7 working days for our refund but I have get it yet. And they also not cancel our auto debit yet