Byju's — Membership cancellation

Dear sir/madam
Sir because of lockdown we brought a byjus membership and just a week before my grandfather expired so due to this no one was willing to leave hear so we went out of state for a month and then only byjus send their products and then they call we use to tell them we are not at home and the person whom we have final the deal was knowing so the when kit was revived we told the delivery agent to give it to our neighbor so he handed them over and when I got back home and tried leading and I was unable to understand so I called them and after a day or two they said it has been more than 15 days so now you can't cancel the membership and you don't have any other option so you have to study with it.sir I am from a middle class family this much big amount we can not waste because sir when I am unable to understand than for sure it's a waste of money and time
Sir/madam I request you to please help me in canceling my membership and returning my money back...
Please help😭😭😭😭
Thanking you
Akshita Tiwari.