Kapsons India International — misguidance of the store staff

We have done a shopping of15900 at kapons store and we were told that we will get a assured cashback of 3500 bt we get only of 1500 and we cannot use all 1500 at once and we can use only 500 rs discount on shopping of. Shirts from the givo brand only we have completed the shopping of 15000 for availing the offer only at the store and at the end we were not provided with any discount so please take the action as early as possible to maintain the goodwill of kapsons