Byju's — Cancellation of my IAS course

I have taken my byju's IAS preparation course in Nov 2021. They sent tablets and also send books in January 2022. I have already paid 5 months EMI. Now my family is family economical crisis and my family is not able to pay further EMI'S but the finance company pressurised. I mailed the byju's company to cancel the product firstly they didn't respond then I again mailed they reply after some days that one employee contact you after some days I called by myself and they said it will not cancel because the cancellation process is only done within 15 days. They also said that they can only extend you emi for 6months not more than that. They can only do the extention of EMI. They are saying cancellation only in 15days and they don't say anything about that they send the books within approx 2months. Sir please raise the issue I just want to cancel it because I can't pay any EMI because I have no money...