Amazon India — Failed to fulfill even 50% customer satisfaction

Address:	560072
Website:	Amazon

Hello amazon,
After seeing amazon great indian sale offer!!! Thought of booking few items and avail the discount, but experienced it is pathetic.
It took so long to segregate pantry items and others.
To avail 15% discount i somehow managed to book 2000rs items.
Now to avail 15% cash back on sbi debit card need to book minimum of overall 5000rs.
In the mean time called customer care executive twice to reconfirm and make sure that i am on right track, confused executive at last confirmed that yes you will get 15% discount from amazon and 15% cash back on sbi bank on or before 22 april 2017.
With this confirmation i booked items worth 5500rs and the payment was made successfully.
Next day pantry items was delivered in damaged condition and i rejected the same. Delivery boy updated it has rejected by customer (He has not mentioned that the products were damaged)
To my surprise, amazon has cancelled the order and initiated the refund.
My complaint:
Waste of time: time invested in placing the order nearly 2 hours even more
Loss: promised 15% discount by amazon and 15% discount by sbi (Promised)
(Which is 350+750rs= 1100rs)
At last after calling amazon customer care multiple times and explaining the issue, they tried to place order for few items and said cannot place order for other items due to out of stock and also you will not get cash back 15% as the order is cancelled.

I fail to understand why do i deserve this loss of money and time even after double checking with amazon customer care. This is a very unpleasant experience with the most "customer centric company, amazon."
I request for the solution by amazon.