Maharashtra State Road Transport Corporation [Msrtc] — Refund initiation

Respected sir,
I m Akshay Sapkal, from akola. I had booked 2 tickets on 28th nov 2020 for Badnapur from akola of shivshahi bus which was scheduled to depart from nagpur at 6.30 am on 29th Nov 2020. But i cancelled the tickets.
Its been more than 20 days i haven't received any refund of 820 ₹ which i had paid for booking. I tried to call all the helpline numbers multiple time over the period and sent many mails but haven't got any response from support. I m a student and its large amount for me. So please look into the matter and please give me refund.
The details are as follows,
Bus- Nagpur to aurangabad
Type- Shivshahi
Boarding-Akola stop-Badnapur
Booking date- 28/11/2020
Departure date and time- 6.30 am on 29/11/2020
Account- ektakshay
Payment mode- online payment, debit card payment
E-ticket number[protected]
Cancellation date-28/11/2020
Cancellation voucher Number[protected]
Refund referance number-108646.