Indian Bank — Refund didn't reflect in my bank account

Address:

40 Barnakar 5th Street, Flower Garden, Near AL-Ameen School, Ambur

I've booked a ticket on RedBus through my Indian Bank Debit Card. But the booking got cancelled for some issue and my Payemnt debited. The RedBus informed that they'll refund my amount in 1 hour and as they said they've refunded my amount. But, Indian Bank still didn't reflect refunded amount in my bank account as it crossed 10 days. I've enclosed the screenshots below.

Bank Name: Indian Bank
My account no: [protected]
IFSC: IDIB000A016
My mobile no: [protected]

The reference number of refund amount.
UTR ID: UTIBR[protected]