Sex Escort company asking more money saying safety deposit

There is one Sex escort company datingalways.com. I registered on their site by paying 1030/-.They also asked for my photo proof & I submitted a copy of my Voter Id. Then they gave me login credentials for their website & told me to select a girl from the list they have sent me on my Whatsapp . Then they asked me to pay 22500/- saying that it is a refundable amount & will be paid when you meet the girl. After the girl was confirmed they fixed my meeting & shared me some address near my location. Then they have asked me to do a payment of 48500/- telling that it is the safety deposit amount & 46500/- will be refunded once you meet the girl. Once this amount is paid I will get a mail from the company regarding the confirmation & will get my service id which I need to share with the girl once we meet. I have not paid any amount & told them that I don't want any service and please refund me my amount of 22500/-. They are now blackmailing me saying that the other party have paid the deposit money(56000/-) & she is waiting for the confirmation mail from the company. If you don't pay any amount she will register complaint against the company & I will to get a legal notice from them and I will get into problem. So what should I do now & I want my money back which I have paid?