Ibibo Group / Goibibo — Not received credit shell or refund

I had booked two flight tickets for my mom with PNRs ZQJJ7E and WIMY6M for travel during which lockdown happened. The airline Indigo claims to have sent the complete refund to gobibo which is the travel agent through which the ticket was booked on kotak app with which goibibo has tie up with.

I have neither received any credit shell nor any refund upto date .