[Resolved]  Flipkart — product goes out of stock after coming into the cart

Address:	Mumbai City, Maharashtra, 400706
Website:	www.flipkart.com

I didn't like the service by flipkart as whenever the sale comes it gives fake promises.
Today 6th march 2018, there was a sale of mi tv 4 on flipkart at 12pm sharp.

I tried to buy it and to my luck it came into my cart, however when i started entering my address and proceed to payment gateway, the page showed "all of the items in your cart has gone out of stock,
I am damn sure that i filled my address within a span of 10 seconds due to chrome's autofill settings
I don't get it, that how can a product go out of stock within 10-20seconds even after getting into the cart, if it would not have been in the cart, it was understandable.
Or do flipkart wants us to carry our shopping within 10seconds wow..
I also took a screenshot when the product goes out of stock from the shopping cart.
I ask the consumercomplaint board to take strict action against this.