T and C : Promocode can be used 1 time per user/number. A number can be recharged only 1 time using this campaign. Cashback is credited within 24 hours of the transaction into user's Paytm Wallet. Valid for first transaction of electricity bill payments and first mobile bill payments. Valid on Web and App. This promocode is not valid on Airtel and Any Mobile postpaid numbers (Prepaid, Landline Bill Payments.). Valid till End of March.