Consumer Redressal

I had booked Apartment in 3C greenopolis project in Sec 89 Gurgaon. Buniyaad committed to pay 3% discount to me on the base selling price. I have given 30 % amount of the flat yet I have not received discount amount. I checked with Buniyaad in April 2013 and they say they didn\'t get anything from builder 3c. In July 2013 I receive letter of Income Tax saying that Buniyaad paid me 110050 (which is 50%) of the discount promised by them. I checked with Buniyaad and they said they had only raised bill of that amount and builder paid them the discount amount in May-June and they will pay me in August end. I checked with builder and they said they had received bill from broker from Nov 2013 and my discount amount was paid in Jain 2013. When I ask this question to Buniyaad they don\'t respond to my queries.