Byju's — EMI plan of Byjus

I have bought the byjus IAS tablet course in the month of June.When I contacted the helpline most of the time it was busy, so I couldn't give my product before 15 days.After that I contacted the team, they said we can't refund the amount.Before buying the courese, the byjus team contacted me more than 100 times a day and gave me pressure to buy the course.The byjus team said just 20 members per batch but now in my batch there are more than 1000+ members.After buying they didn't even contact me once asking if the course is really good or not.They only make fake promises .I want to stop my emi plan .Most of the times the byjus exam prep app is not working properly even after having good wifi connection.I want my money back .Please resolve this problem