defective washing machine manufactured and sold and no steps taken in this regard yet for months

Location/place: Flat-2C,Gaurav Apartment,Ramkrishna Nagar,Garia,Kolkata-084

Name of company/service: whirlpool

Purchased on 17.05.2012,from Sales Emporium 1458,Garia Main Road,Kolkata-700084(ph-033-2428-5241/42/43),at the time of demo the machine was declared defective by the service engineer.Since then several complaints have been lodged at Sales Emporium as well as Whirlpool office(Kolkata). But it has been months now and no steps has been taken in this regard and we are suffering even after an expense of 11000.hope your immediate intervention in this regard to resolve the matter at the earliest.