Punjab National Bank [PNB] — Refund from Amazon

Flipkart initiated refund of 399, 649 and 559
With
Refund Reference P2102071558331784307610,
Refund Reference
P2102081701389788422942 and
Refund Reference P2102081710098062735369 respectively.
Total amount refund 1607 rupees
But the amount still not credited in my pnb saving account.