IRCTC/online Ticket Booking — Refund not credited in account for failed booking

I have tried book ticket online through irctc.co.in website on 10-may-2017. Ticket booking was fail but amount 6375 rs was deducted from my icici bank account for failed booking transaction.
In my irctc account's refund history showing amount was refunded on 11-may-2017. But i have verified amount [6375 rs against failed booking] is not yet credited in my icici account.
I have register complaint irctc #5892490. Many time i tried to escalate but i was failed. No communication from irctc.

The worst part and frustration, its very challenging to connect with customer care after huge patience and luck. I decided to start booking from paytm, makemytrip avoid this bloody # [irctc] fellow for train booking. They are not responsible for any thing. They used booking system which is developed by #s or [bandar chaap] developers. Sorry but you[irctc] have to accept something wrong with you.