Vetri Travels — Booked Bus cancelled/ Service cancelled by vetri travels but not refunded

I booked a ticket from Chennai to NAGERCOIL on 11/11/2023 AC sleeper volvo bus in Vetri Travels. On my travel date before 2 hours of my journey start, vetri travels team member called and told bus has been due to some technical issue, your booking amount will refund with in 1 hours. But today date is 13/11/2023, still now I didn't receive my refund amount. From past two days am trying to contact vetri travels over the call and email. But they are not responding, not revert email, didn't pick the call. Please help me to get my booking amount.