HDFC Bank — refund issue

Sir,
My self goutam. I had booked a flight ticket on 5th december using my hdfc debit card for ₹19042 but the very next day, i cancelled my booking. After cancelled, my travel company (Flipkart) initiated a refund of ₹18202 on 6th december.

But the problem is, refund is not credited into my account till now.

Flipkart refund reference number: 5756147904886697704089

My hdfc account number: [protected]
Ifsc: hdfc0003474

Also, i attested the screenshot which i received from flipkart team.

Please solve this problem as soon as possible.

Thanks.