Zaakpay.com — Refund amount not credited in bank account

Hi team,
I have booked ticket on irctc app using zaakpay payment gateway.
The ticket is automatically cancelled yet the refund is not credited to my amout
Please check and help me on to the same.
Please note i have checked from my end.
Found that the payment has been refunded to zaakpay pg bank.
But it hasn't been credited to my amount from zaakpay.
The transaction details are as follows:-
Refund processing date:16-may-2020
Refund amount:2840.0
Refund reference no:zp59bfc5b132ec3
Payment option used : credit & debit cards / net banking / wallet (Powered by zaakpay)