Indian Railway Catering & Tourism Corporation [IRCTC] — non refund of amount

Sir,

I already sent this e-mail several times through my registered e-mail to itctc ([protected]@irctc.co.in) about non-refund of amount of rs.495/- for my failed transaction to my account. Till date the amount was not refunded. Please help.
The details are furnished below:

On 09/05/2019, i have tried to book a 3rd ac ticket from kollam to aluva through irctc website. (Transaction id:[protected]). The amount asked was rs.495/- and the same was debited from my sbi bank account. The payment request received through google pay app and myself payment done through google pay on the same date and that amount was debited from my through bank account. But the ticket was not booked due to the reason no response from bank. On 10/05/2019 one message was received in my phone no that "an amount of rs.495.00 deducted against irctc txn id [protected] on 09-may-2019 will be refunded as your ticket could not be booked/service not rendered." after that, i have not received any confirmation or refund of the debited amount of rs.495/-. Also in the irctc website through my login in the failed transaction history details the following message is shown:
“transaction id: [protected]

Kollam jn (Qln) aluva (Awy)

Transaction date: 9 may 2019

Transaction amount: 495.0

Payment status: late confirmation received from bank on[protected]

Failure reason: no response from bank

Train name: netravathi exp

Train number: 16346

Boarding station: kollam jn (Qln)

Date of boarding: 21

Quota: general (Gn)

Class: third ac (3a)

No. Of adults: 1

No. Of children: 0

Bank name: credit cards/ debit cards / upi (Powered by irctc)

Refund id: [protected]

Refund status: amount credited to bank with reference no. [protected]

Refund amount: 495.0

Bank reference id: [protected]”

Please help me and requested to refund the amount.

Till date (04/08/2019), the amount was not refunded.
That is why i complaint through this portal.