Indigo Airlines — not receive cancellation refund amount

Hi
Rajani badmotha had booked a flight from mumbai to delhi pnr-uj513n of 1st january 2019 on 26th december 2018.
Due to some reason i hve cancelled the same ticket on 31st december 2018, as i got sms and mail of cancellation stating the details of cancellation as toatl deduction amount-3000 and refunded amount-3282/- and also stated that the balance amount will be credited to my account in 5-7 working days.
Today it is almost more than 20 days the amount i have not receive.
So i request u to see the matter and do the needful.
Thanking you.