ESCORT SERVICE - Service not provided and security deposit not refunded

I found a escort service contact on locanto website. I have messaged them on telegram and asked for hiring an escort. They told me to pay *** rupees for booking. I have paid that amount, then they sent girl profiles. I have selected one girl profile, then they sent me location of the hotel and asked me to come there. I went to that location and some person called me on WhatsApp saying that my escort is waiting in hotel room and I should go with the code they provide. They asked me to pay **** for the code to receive. I have paid the amount, then they sent me message saying that security deposit is required as I am first time user. I have sent security deposit of **** rupees through upi. Then they said security deposit is needed for both me and my escort and asked me to pay **** more. I have paid that also. Then they said it should be a single transaction as they need to enter transaction ID into their website to receive a code. So I have paid ***** rupees. Then they sent me a code which reads activation is due. They said that I need to pay ***** more to reactivate the code. Then I asked them to cancel my service and refund my amount. They denied saying that I will not get refund till I pay ***** more and complete the process. What should I do ?