Reliance Trends — Credit Card Transaction Failure - yet no refund

Address:

55 Velachery Main Road Mahalakshmi Nagar, East Tambaram, Selaiyur, Chennai, Tamil Nadu 600037

I had gone to Reliance trends in Chennai (Selaiyur) to purchase a clothing for my father. I had got two track suits for him. I paid by my ICICI credit card, (XXXX6018). As per the bank, the transaction transaction was completed successfully, but the response to the card machine was not obtained. The retail saleman said that the amount will be refunded in 3 days time. So, I had used annother card to pay the amount of INR 998.00 on 17-May-2023. But, till now the transaction has not been reverted. I wish to know how to initiate this dispute and get this amount refunded to me ASAP.

Thanks & Regards,
~Venki