Big Bazaar — gift i have not received in the exchange of coupons per 500 rs purchase

Address:

Bangalore, Karnataka

Last month you are providing stickers on each purchase of 500rs for gift purpose. In this way i have 11 stickers. On 11 stickers you have gift option of dinner set, bowl set etc. The offer was for 1 month. But each time i went to collect gife, your emplyee said that gift is over & it will come. They asured next month also gifts ll come. Till now I am going to collect it & your emplyee are giving dates. What kind of organisation is this?