Tamil Nadu State Transport Corporation [TNSTC] — Refund not issued

Sir/Madam
My name is Aabin.S
I booked a ticket from Nagercoil to Bengaluru
(route number :888UD),
(Bus ID no: E-2216)
through online mode
(Bank txn no:WSM[protected]). (Journey date:17/1/2022).
(Journey time:18.30Hrs).
I paid using debit card.I didn't make the journey.I tried to cancel the ticket.But it couldn't be processed and I contacted the toll-free number provided.They said they couldn't sort out this issue.I kindly request to look into my problem and help me receive my refund as earlier as possible.

Thankyou,
Aabin.S
Mobile:[protected]