how to reedem:-
Login/Create an account with FreeCharge
Select Recharges/Bill Payments, and choose your operator
Type in the bill amount, and in the next step use promo code:-4FC
Pay through preferred payment method
Enjoy the cashback in your FreeCharge Wallet

Tandc:-
Valid on successful recharges/bill payments till 16th March 2016
Valid on min. recharge of Rs.50, Max. cashback of Rs.50 per transaction:-4FC

promocode has to be applied to avail cashback offer
Applicable FIVE Times per user/credit/debit card/mobile number
Valid on Credit/Debit card and FreeCharge Balance
Not Valid for transactions done via Netbanking
Cashback will be credited to your FreeCharge Wallet within 24hrs that can be redeemed within 185 days from the date of credit and is non transferable
Not Valid Valid on Airtel transactions
Valid on transactions done by FreeCharge Wallet (Web/mWeb/Latest App versions)
Virtual Cards & Cards issued outside India will not be eligible for cashback / reward
http://offers.freecharge.com/4FC/