Zopnow Retail — They took 607 rupees from me by fraud

Seeing an offer i went to zopnow retail, registered and ordered items worth 607 Rupees and did a UPI payment.once payment was completed zopnow side closed. when i logged in again. they deleted my used id and history. i do not have a order id and no refund of my payment has come. i have written to their contact us page also but no response. all i have is payment proofs from my bank statements. kindly help. in this pandemic we were eagerly waiting for essentials and this fraud has hit us very hard in this mentally testing times.