Zeb It Service Pvt Ltd — funds not received yet

I invested in bitcoin through zebpay, its more than 16 days i have not received my funds. They claim to transfer funds in 1 working day, but i am still waiting to get my money back. They are cheating the investors by giving them false information. They ask to send bank statement for their finance team to check but never get any update from them. I called on their helpline several times and make complaints but they dont bother to reply back and resolve the issue.
Please look into the matter and resolve this issue as soon as possible. Else have to take some legal action.