Big bazaar not deliver order fully

Team, very sad to see that my order was not delivered fully and after 1 week I was informed that the mentioned item is no there in the stock. Its really pathetic to see such things and because of this I even missed the offer which was easily available in the store. Now its very easy from your side to say its not there in the stock but who will pay for the offer which I could not avail. When I called that time all the product was very well in the stock and now after almost 1 week you guys informing me that too when your guy came to deliver . If I was made aware about this on or before 15 aug I would have bought from store diredlty. Now if things are not sorted and if my pending order is not delivered I will surely take this matter to consumer court. When I have caleld for ordered your customer care executive DID checked and then only took the order.