Should I take legal route for job fraud?

Background: A company representative from ClickJobs called me for a job availability and asked me to register before proceeding further. Initially, the called told me Rs. 6000/- however afterwords she transferred the call to a senior member. The senior member told me that as the position is in Singapore, I will be charged international registration fees of Rs.13,260/- After paying the initial registration amount the representative also asked for document verification charges Rs.7800 and in next step he asked for employment verification charges Rs.6800. In the third transaction, I got suspicious and asked the representative to stop the process immediately and refund the payment. Also sent an email confirming my withdrawal from process immediately. The company did not proceed with the refund but the representatives kept calling me for verification, job offers etc. Each time, I kept my stand clear about my withdrawal of process. Now, that there is nor proceeding on the issue, can I take a legal route and what would be possible steps? Regards, MK