Andhra Pradesh State Road Transport Corporation [Apsrtc] — non refund of cancelled journey ticket of apsrtc

Address:

Krishna, Andhra Pradesh, 520006

Good evening Sir,
I am SANKAR.J and I have cancelled a journey ticket with APSRTC (Through E-Billing Solutions Pvt Ltd ) for Rs: 266/- with their ARN Number 74332748293829310356510 dt: 21/10/2018 & Refund ref no: [protected] but it was not credited to my account.
When I asked the customer support of APSRTC, they simply forwarded to EBS Staff and they are advised to contact the Bank, but the Bank officials informed me that “they don’t have the provision to check the reference number and also this number is not related to Online banking and asking me
What is Expansion of ARN?
On which date the Refund amount has debited from their Account?
From which bank and which Account it is debited? ”.
Further I have mailed so many times but both EBS and APSRTC persons not responding
So kindly advice me what is the solution?