Amazon India — Moto g turbo/ amazon has cancelled successfully placed order without any intimation, making fake promises and playing games with customers

Address:	560035
Website:	www.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.
It was mentioned that the order will be delivered by 30th march, 2016.
After 4hrs received a mail from amazon stating refund for amazon order# num was successful.
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.

Amazon have a gut feeling that nobody can complaint on them whatever the cheap tricks they do.
I request you to take serious action on companies like "amazon.In" who are trying to fool their customers.