Kalyan Jewellers — transaction that was made void at kalyan jewellers lucknow

Address:

Lucknow, Uttar Pradesh, 226001

We made a purchase at Kalyan Jewellers Lucknow on 27/02/18. We made the payment of Rs 40000 via SBI debit card. Then the manager told us about the HDFC cash back offer. He told us that he can abort the SBI payment and the value will be refunded in 7 days. So we made the payment via HDFC credit card and he aborted the SBI payment. It has been more than 20 days but the amount of Rs 40000 has not been reversed. I have made several visits to your branch post the incident but I have not been helped and have been asked to track the credit reversal with the banks myself for Void Transaction Receipt Id : 40135571, Invoice No: 003439.
Please help me in credit reversal as the store is not helping me out.