Amazon.in — Cashback offer

Address:

Bathinda, Punjab, 151001

My name is naveen, my email id is [protected]@gmail.com, i have baught a mobile from amazon.in on 5th march that was lyf water f1s, with order number[protected], according to amazon seller i should get rs 500 cashback in jiomoney account, but when i received the phone jiomoney refused to give any cashback, as jiomoney said that offer has been expired, and than i contacted the seller, again they said offer has been expired. But at the time of purchase the seller and amazon didn't mentioned anywhere that the offer will expire on 7th march, and i got the phone on 9th march 2017, i contacted amazon many times, but they refused to provide cashback, today on 14th march i visited the amazon again and what i checked that still offer is showing of jiomoney cashback and the product is amazon verified, according to my purchase offer is expired, but they still continue to make people fool by displaying the offers which are expired. Kindly help me out so that i can get my cashback. I am attaching the screenshot which shows the offer even on 14 th march, that was expired on 7th march.