When you make a request via Free Charge you will have an option to select by increments of 50, 100, 150, and above.
After you've submitted the request it will be placed in queue for processing. It can take up to five (5) working days to be processed due to a manual verification process.
You will then receive a voucher code in your e-mail to be used to redeem the credits into https://www.freecharge.in/
If you do not have a free charge account please sign up for one.
Simply enter the code you received as "Free Fund Code" in your account. After redeeming the credits you may then proceed to recharge your mobile no.(s)
For further instructions please watch the following video on how to redeem the codes