https://www.helpchat.in/sharedeals/offer/helpchat-30-cashback-on-recharge-of-rs-50-and-above/ T&C: - Flat Rs.30 cashback on Recharge of Rs 50 and above. - Use code CASH30 to avail the offer. - Can be used only once per User/Device/Number. - Valid for specific Users doing recharge for first time. - Cashback will be credited in 24 hours. - Not valid for Airtel users. Valid Till: Dec. 31, 2016, 11:59 p.m.