I am using CashKaro since more than 2 years and have earned more than 10 k as Cashback and rewards. It is is very easy to use, provides quick resolutions if we have any issues, customer care is polite and very helpful.
Just remember to login to CashKaro before shopping, buying flight or hotel tickets, movie tickets, medicines, credit card, etc. You name it, they have it. It is part of my life now. Icing on the cake is You also get lifelong cashback for your referrals.