https://www.freecharge.in/ [Visa Debit & Credit cards] 10% cashback upto Rs. 50 (Can be used twice) coupon: VISA50 [ New Freecharge users ] Postpaid Bill Payment Rs. 50 Cashback on Rs. 400+ coupon: POST50 [New Freecharge users] Postpaid Bill Payment Rs. 100 Cashback on Rs. 500+ coupon: POST100 T&C For New POST100 Coupon:- Valid on successful Postpaid Bill payments done till 24th Feb 2016 Valid only for New users only Valid on minimum recharge of Rs.400. Flat cashback of Rs.100 POST100 promocode has to be applied to avail cashback offer Valid once per user/credit/debit card/mobile number Valid on Credit Card/Debit Card/ Netbanking transactions Cashback will be credited to your FreeCharge Wallet which can be redeemed within 185 days from date of credit, and is non transferable Not Valid for transactions done via FreeCharge Balance Virtual Cards & Cards issued outside India will not be eligible for cashback / reward Offer not valid for Airtel transactions