Reebok, Apparels & Footwears Pvt Ltd, Link Road Madhupatna, Ph[protected], [protected], — sale of damage footwear to the customers

Dear sir
Recently I purchase a Reebok ladies foot ware from JAS APPARELS & FOOTWEARS PVT LTD, LINK ROAD MADHUPATNA, PH[protected],[protected] , Bill No -3134 dated on 19th sep 2009 (return bill no.) WITHIN 25days with 5-7 time uses of the footwear which cost me Rs.996 (with 40% sale discount) damaged in such way that no one can even think of repairing it again to re use it. So I approach the shop for the exchange of the footwear and they were kind enough to exchange it with the new foot wear of 2006 packed/manufactured with the confidence that this will last for 12 months at least. With no hopes I was forced to take that pare of shoos which get packed in 2006. But unfortunately after use of again 3time my 2nd pare shoe’s strap, sole comes out of gum which again no one can use it.
As I didn’t find any grievance / we care in the reebok site I submitted it in this site .
Is Reebok sale with 40% is for sale of footwear beyond expiry date?
Kindly suggest me what should I do ??
Regards
Sangeeta