Scam on olx

actually I am a student of class 12.... So around 1 month ago i posted some pics of books only olx. The selling price of books was 7500.. Fr mujhe bhut msg aye ki hum lenge 7500 mai . I said ok.. Then they all are said ki payment upi se karenge... I said ok. Then one of them send me the QR and said ki payment received krne ke liye mere QR scan kro I said ki payment received krne ke liye apko mere QR ko scan Krna hoga na... Why i scanned ur QR.. AFTER SOME CONVERSATIONS HE BLOCKED ME 🤣