Indian Army — fraud by army man on olx

Address:	New Delhi, Delhi, 110093
Website:	olx is also responsible because it does not mention any news about these fraud which i going on from

Fraud on olx by a person name Vikas patel, army man he asked me to send some amount before delivery so i sent him 300 as a token money, then he showed me delivery receipt of overnite courier service company so i thought is a authentic company it is worth to send rest of the money 14000, so i sent him complete money. but after sending the payment he switch off his number, then i realise it was fraud.
in which unfortunately i lost my 14000rs, i have upload the pic which he send me as a id proof . and the phone number is= [protected], and paytm account number of receiver=[protected]
please resolve this issue,