Amazon India — Order cancelled without any reason, i want my coupon voucher or mobile not refund

Address:	400701
Website:	amazon.in

I placed a order MOTO G Turbo (white) on 27th March 2016 with discount 7500/- rupees.
And my order id is Order #[protected]

2. I made payment of 4999 through credit card and
the payment was successful.I have also received the confirmation mail along with product deliverydate also after ordering the product.
But after sometime, they cancelled my Order of their own.
I am shocked that Amazon also cheat customer, I want the product not the refund.