You might be familiar about previous freecharge offer which was giving 10 Rs recharge on 12 Rs Britannia Bourbon biscuits.
Offer is now redefined and you will get 20 Rs freecharge promocode on buying 20 Rs Bourbon pack.
How to get this offer?
1) Buy 20 Rs Britannia Bourbon pack from your nearest store.
2) Look for 12 digit freecharge voucher inside packet.
3) Redeem promocode on freecharge website or mobile apps.
4) Offer can be availed maximum of 8 times per user.
5) It will expire on 30 November 2014.
You can get more information on this page