Ant Girl Collection — refund

I had ordered 2 tops from antgirlcollection.com via their facebook page. The order was supposed to be delivered on 25th january and it hasn't reached yet. I tried tracking my order, but was unable as their phone number is switched off and there is no trace of neither their website nor their facebook page. They only accepted prepaid orders and so i have lost rs 580. I had paid through upi to a business called razorpay. I want to file a complaint against this website. Please help me to get me back my refund and assist me to do the necessary next steps.
The message received on placing my order:
Thank you for shopping with antgirlcollection.com. Your order number 47821 is confirmed. Your order will delivered to you within 13 to 15 days. Happy shopping! We don't ask for otp/pin for offers to demand money. Contact us: [protected], [protected]@gmail.com