Flipkart — Big billion days/10 % off card scam

Website:

www.flipkart.com

I have bought some products from Flipkart on the Big Billion day sale with SBI card which has a 10% discount. All i received were products which had minor scratches/ which were returned by other customers. The biggest scam is i got a product which is fully tampered with and not working properly. When I tried to return they are telling the 10% discount applied to all other items will be deducted, which means i won't get anything if i return the product! Why return option you have kept then ? That return is the exact reason why people trust people, this is nothing less than a scam