Advertising complaint against a private company?

I am cheated by a job consultancy. They told to pay registration fees. I did.

Then a person from company interviewed me on telephone and told me that i am selected. later again they asked me to pay for verification process etc etc. Company name they disclosed though. I almost paid Rs. 20,000. I am cheated. I shall not get refund because i have no proof what i paid and all other than a few bank receipts. But I will not allow them to cheat anyone else in future like this. What shall I do to publish this news 'Not to trust the company' ?