Flipkart — I didnt cancel any order by my order status shows that one item has been cancelled

For the Order ID - OD[protected]
my order has been cancelled without any prior notification.

I had ordered for a Men’s blazer from flipkart.com and as the site was showing the item as in stock, i made the payment ( rs. 2249 ) of the same through my debit card on 30th September, 2019. I received a confirmation to this effect saying the product will be delivered at my house address of delhi in few business days. However, after few days they sent a notification to me cancelling the order and mentioning that the payment will be reversed in my credit card account. They now claim that the said product is no more in stock.
They cancelled my order saying that the product is not available inspite of sending a confirmation to me.