Byju's — I have been subscribed byjus plan as iam trying to cancel for many months but they are not responding till now

One day i have a project so i login in byjus with my number so they taken and called you studying school 12 or 11 asked and we said 11 they our byjus has neet jee coaching you can join said okay said and after a week a madam came and Councelled me and paid 5000 and i continued the plan for 4months and due to some personal problems I have need to cancel my byjus plan so i have called and asked they to mail and send the details given there I also sended and the team will take quick response but till now iam mailing but no one are taken response please do something