freechargeFreeCharge is offering 10% Extra upto Rs. 20 when you deposit money in your account. A valid participant has to ‘Deposit’ and ‘Comment on FreeCharge Facebook’ with his/her order ID in the duration of contest.

FreeCharge: My Balance | Facebook (offer details)

GrabbyOn is offering Rs. 100 Mobile Recharge for Rs. 50. Limit 1 per customer and 2 per house hold. Coupon can be redeemed on GrabbyCharge after 24 hours.

They had run similar promotion last month, offering Rs. 100 FlipKart Gift Voucher on Purchase of Rs. 49. People received and successfully redeemed FlipKart Gift Voucher.

GrabbyOn: Rs. 100 Mobile Recharge Rs. 50 (Buy Now is on left menu)

AtomTech is offering Equal Amount of Recharge Free when you rechage your mobile using Atom Wallet. It can be used for 3 numbers and upto maximum Rs. 100 per transaction. Offer is valid till 15-03-2013 midnight. Free bonus recharge will be provided within 24 hours of initial transaction.

Website: AtomTech | Download (A JAVA/J2ME based mobile payment application. Wallet option in categories.) | Terms & Conditions (bottom)

Fillsim in their Happy Hours promotion is offering Rs. 15 off on recharge of Rs. 20 or more and 15% off on recharge with maximum discount of Rs. 10.

Rs. 15 off on Rs. 20+ Coupon: HAPPY75 (expired)
15% off Max Discount Rs. 10 Coupon: LAUNCH15

Website: FillSim (new website)

airtelAirtel is offering Rs. 10 Talktime Loan if your mobile balance is less than Rs. 5. Rs. 10 would be deducted on your next recharge.

Airtel Talktime Loan: Dial *141# > Take Adv Talktime / Ask TT