(New User)Flat Rs.75 cashback on Rs.500 and above on Helpchat
https://www.helpchat.in/sharedeals/offer/helpchat-flat-rs75-cashback-on-rs500-and-above/

T&C:
- Flat Rs.75 cashback on Rs.500 and above.
- Use code BILLCASH to avail the offer.
- Can be used only once per User/Device/Number.
- Offer is valid for Postpaid bill payments.
- Valid for Users doing recharge for the first time.
- Cashback will be credited immediately.
- Not valid for Airtel users.
Valid Till: Dec. 31, 2016, 11:59 p.m.