Indian Army — fraud on mobile selling

Sir mera naam wasif karim hai maine olx me ek phone ka ads dekha tha to maine usse kahan ki i want to exchange my phone.. To usne kahan ki thk hai mai indian army se hu to aapko mai apna phn courier krwa deta hu aap aisa kro ki aap 800 rupya paytm kr do office k paytm no pe usne bht sare pic bheje parcel k id proof ke then maine bharosa krke bhej diya only because he is in army... The kch der baad courier walon me call krke kaha ki bhai 2100 lagega aapke pasa courier pahuch dunga bs mai aapke ab najdeek hu to maine usse kahan bhai mere pass paise nhi h to usne kahan ki 1000 aaap krwa do baaki mai krwa dunga.. Or maine krwa diya.. Then fir call krkr bolta hai bhai aapko gst k anount 900 dena hoga to maine saafmana kr diya or usse kahan ki mere paise wapas kro to uske baad unka phn ab switched off ata hai or ye kal ki baat hai bhai or us saale k naam jaikishan hai

Plz help me sir