Fyers Securities — Demat account

Hi, I opened a demat account with fyers securities on APRIL 2020. After opening I was not able to add the funds and I have sent so many mails about that issue. Generally I manage funds through UPI with other brokers also. They have that upi feature but not working. So I mailed them to close my demat account and they are not doing it. Even they are charging money also. They dont read my mails and replying some irrelevant mail.

Please take the necessary actions to resolve my problem.Thank You