Guys here is what you can do...
I recharged with 350 and got balance of 385..i.e rs.35 as cash back
goto Online Recharge | Mobile Recharge for Airtel,Vodafone,Reliance,BSNL,Idea,Aircel,Docomo,Tata Indicom,
(Offer available only to existing users of Mobikwik.com. New users are not eligible.)...