Byju's — Not cancelling course and not refunding amount

I took admission in Byju for my daughter course. I was told that they will give me 15 days free look in period if I don't find the course ok in the month of November 21.
Owing to job loss I mailed them to kindly cancel the course within 5days from the date of commencement of the course and also complained it to the customer service. But one month has passed now and they have not done the cancellation process and not refunded the amount.
I request the consumer complaint cell to kindly take strict action against them and help me the refundinng process