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

I checked the bank statement but there is no credited entry for refund. Kindly look into the matter personally and credit the same in my bank account as early as possible.

Pnr numbers:

1) [protected]
2). [protected]
3). [protected]
4). [protected]
5). [protected]
6). [protected]

More than 15 days lapse but till date the amount not credited in my bank account.