MagicBricks — complaint about the real estate agency for brokerage charges

I had given an advertisement in magic bricks for purchasing a flat and got numerous calls from estate consultants. The agency m/s. Rajesh real estate agency in chember had contacted me and narrated about the various projects in chembur, mumbai. They also said for resale they take brockarage of 2% ie 1% from buyer and 1 % from seller. While booking a flat under construction no brockarage from buyer as they will be paid by the builder. But during the payment of token money to the builder the agency is demanding 1% from me over and above he get 2% from builder. This is illegal. What action are going to take against the agency as they are registered with you and contested me on behalf of magicbricks