Allegedly there is some misuse of cash back websites in India, because some websites like Amazon are no longer offering any kind of cash back to indian customers in 2017 through other websites. Other websites like Flipkart are offering cashback, however the cash back is allegedly not from Flipkart, it may be a marketing promo from Amazon associates.
India is well known for fraud, corruption and nepotism worldwide and the indian internet sector is no exception
So instead of paying money to the cash back websites, amazon is offering incentives to customers who will regularly shop at the website