Ibibo Group / Goibibo — Coupon discount was not applied after payment deduction

I have booked a flight ticket from mumbai to varanasi on today i. E. 21/09/2020. My booking id is-"gofldmtandfb35b[protected]".

While booking process i have applied coupon code "firstfly" and it shows approx. 1116 discount. After discount my amount shows is approx. Rs.10646, and shows no cost emi option on payment page. So that i have chosen no cost emi of icici bank on the basis of 3 months. But when i made payment the total amount was deducted is rs.11511.87.

Therefore it's kind request you that kindly clarify the things asap and refund the coupon amount. I have used mail id while booking is-"[protected]@gmail.com". Another mail is nitya. [protected]@gmail.com.