Consumer Redressal

I have purchased a Flat in Gurgaon from Orchid Island infrastructure PVT ltd in Jan\'10 and received a demand for start of construction to be paid by 31st Mar\'10- and the same was supposed to be released by SBI bank but there was a issue from the builder side aligning the tripartite agreement with SBI and subsequently that matter was solved between Builder & SBI 0n 30th June\'10 and the cheque was issued by bank on 1st July\'10 and now the Builder has start charging Penal interest@18% during that period and the same was intimated to us during Aug\'11 after 18 months with compounding so I have requested builder to charge the normal home loan interest only as the delay was because of non signing of Tripartite agreement but the builder has refused my request and not ready to reduce the penal interest that is causing a undue hardship to me. Deepak Kumar Flat No. M 408 GF Orchid Island 9212086452