Spectra Data Services Surat - Took money my money and not answering now

I got call from spectra data company regarding resume job which is a freelance work for typing resumes. For the said work will receive money. Upon registering with resume job, the so called Spectra Data Services, Surat called me and said that they will work behalf of me on my ids for which I have paid them nearly ***** INR since July **th. When I ask them regarding my payments / work progress, they are asking me to pay more money or else they wont do the remaining work. Whenever I call them some of them are talking in a derogatory manner, not attending my calls and some others blocked my calls. I've got all payment proofs which I have made to them. Kindly, please resolve my issue. I would be obliged to submit all the necessary proofs whenever they are needed.
Thank you.