OLX Scam/ Indian Army

someone sell scooty on olx and said that i from another state and i want to sell scooty of other state and also said that i am foji from indian army and they said next day scooty will be delivered and they show you courier receipt and give RC of the vehicle and they send you QR and tell you transfer courier money and the rest of payment send letter. When i refuse to give money they deleted all chat from WhatsApp.