Amazon India — Mazon india moto g turbo order #[protected] cancelled by amazon without any reason

Address:	500032
Website:	Amazon.in

On 27th march, 2016. I have placed an order - moto g turbo for 4999/- (Applied a promo code - gyjqj3yw). Payment was done and order got placed successfully.
Also they have not given any information and notified to me regarding cancellation of order. So is this the way amazon deal with their customers.

But, i haven't cancelled the order then how come amazon can cancel my order.
I'm deeply disappointed with the service provided by amazon. Companies like amazon are playing cheap tricks and playing games with customers feelings