Ibibo Group / Goibibo — Flight Refund pending for 2020 flights

AirIndia Flights (Booking Id - GOFLI5D[protected] got cancelled in 2020 due to covid. AirIndia has provided refund amount of Rs 54313/- to goibibo but they are not processing it back to me. I have been chasing constantly from last couple of months now but no solution.
Goibibo sent an email that refund processing has failed but there is no way to reach to them to update the bank details to get refund. Called them several times, tweeted them, DMed them and posted on facebook too but no help. Not sure what to do next. Please help.