Consumer Redressal

I have been a reguler customer of big bazar,Ambala cant. During the diwali season, there was a silver coin scheme.I had made purchases worth Rs.50000/- and was elegible for silver coins 0f around 50 grams. when I approached the store for redemption,I was told that scheme period was over.The financial loss suffered by me is more than Rs.5000/-.I had approached the store through oral and written communication but no satisfactory solution has been put forward. I humbly request the honourable forum to take up the matter so that genuine customers are not cheated by big corporations through manipulative and misguided tactics.I humbly pray to address my concern at he earliest. Regards, Mohan Abraham