Byju's — Cancellation of Byju's Ias subscription

Address: Joseph Nikhil, pulickal house, kandakkadavu

My self Joseph.
I joined byjus Ias coaching in 18 February 2022 and paid 5000 for the first payment. And I get tablet and textbooks after one week. On March 30 i approached them to cancel my subscription because of financial problems. But they didn't replied properly. Now I got messages back to back for pay the emi due.
Now I'm in a financial problem and i cannot pay 4164 rupees. I want cancel the subscription completely.