Byjus — Fraud happened in Subscription

I have enrolled in a premium course for my son from BYJUS on a 15-day trial basis and I bought this course through Credit Card EMIs, as the statement by the BYJUS sales executive is that you will receive a call from the BYJUS team before 15 days for confirmation and based on the confirmation BYJUS are proceed with the EMI transaction, I never got a call by BYJUS then I have sent a cancellation mail on the same day from 13th day received the product. I have called and discussed several times with BYJUS support and the Senior team but no response from their end, also they told me that they approved the whole refund amount and credited Rs. 1 to my account for account verification, but the whole amount not getting refunded and they suddenly started the EMIs without intimation. I wanted to get my refund back and take strict action against BYJUS for unprofessional behavior so that no one can suffer like me. I think is a scam by BYJUS and take strict action on the same.