If you have MobiKwik account, then log in to it. Find the offers tab and click on it. Click on Popular section and you will get list of popular offers. One of them is Payback Points. You will find Redeem Points options beside it. Click on it and enter the details which are required like number of points to be redeemed, PIN for verification purpose.
Mind well, you will get 1 Rs per 4 Payback points redeemed.
For every recharge of 200 or more, you will get 1 Payback point. For shopping, you will get 2 Points for 200 to 299 Rs spent, 3 Points for 300 to 499 spent on shopping, For shopping more than Rs 500, one can get 10 PAYBACK points with two extra point on every 100 Rs spend.