Mobikwik — no refund of money in an offer

Sir on 16 of august 2017 i recharged my jio no in morning with rupees 399/. First of all i checked an offer in mobikwik which was of getting 59 rupees as cashback in my account. I used a code that was provided by you that was jiomvk and then recharged my number. But still i didn't get the money as cashback of 59 rupees. Sir please take concerned action about it...