I had ordered a product from Flipkart during the big billion day sale. After a week, I started to get SMS every day saying the product is out for delivery. This happened for 5 days. I made several calls to the customer care to know the exact status, but all of them promised me delivery with in next two days. Now, after another 4 days, they simply cancelled the order and send an update saying that I will get the refund in 6 working days. They simply took me and my money for a ride for almost two weeks. Now, they cancelled the product just by giving a lame excuse("technical reasons."). This is how their Big Billion Day sale works. Too bad.!