Byju's — Cancellation

I took Aakash Byjus offline classes for my kid for class 12th but after purchasing the product we came to know he got failed in a subject in class 11th so we raised a cancellation request within 3-4 days of purchasing it, , , it's been almost 3 months they still say my loan cancellation is still under progress their loan giving partner company Avanese calls and scolds me to pay the emi and my bank warns me about cheque bounces yet still they say it's under process from these many days ... These people came to my home took us to their center and did all the job within a day while taking the subscription but now no one picks the call at all very frustrating.