Xiaomi India — mi coupon

I just redeem my mi coins for headset successfully but i did not get any coupon in my account. Please check this details. I have collected this coins daily, if it doesn't get to me it's have been a big loss to me. I need my coupon compulsory. So many days i have been waiting for this headset. Ian collected this coins in all conditions but till now i didn't get any coupon. Please keep an eye this message. Indeed my coupon to my account fastly.