Reliance Trends — Not refunded gpay amount

Address: 377,Bangalore btm second stage

I purchased a dress on 10th with rs 1799 and paid through google pay and thus it was successful from my end and money god deducted. But the billing person didn’t receive it and they told it will credit within 24 hours. Its been 3 days and not yet credited. I paid again with my card of another bank and become successful they gt the amount. I want my 1799 back anyhow