Indian Railway Catering & Tourism Corporation [IRCTC] — ticket refund

I have booked a ticket from vijayawada to secunderabad on 04-jan-2019. Its pnr number is: [protected] and journey date is: 16-jan-2019. I cancelled the ticket on 11- jan-2019. Refund amount of rupees 170 has initiated by irctc on 12-jan-2019. But till date i didn't got money. When i reached customer support of irctc they are asking to check with my bank. But my bank: indian bank people are saying to check with irctc and saying they can't help me. Finally, i have ended in mess. Nearly 1000 rupees are struck up by irctc amd their foolish gateways.