I watched advertisement of sachin Tendulkar on television of Oxigen wallet and then I got a promo code that on first recharge from Oxigen wallet I will get 50% cash back.
So I installed it on my phone and after using it I am getting all services on just one touch like recharge, bill payment and much more. I pay online through this wallet.
I always get cashback on various recharge offers.
It is a superb app and e-wallet.