Indian Army — I'm complaining about 1 plus 6t mobile that I have ordered from him

Address:

Chennai, Tamil Nadu, 600034

I ordered 1 plus 6t mobile as he added ad on quikr so then I ordered that and get told me that he will give me at 17000 then I told him to proceed through quikr then he told me that he will proceed through army curier so I believe him he also send his I'd proof I believe him then he told about the procedure and I pay him 1050 and 5199as he told and also paid half of amount 2 times in installments so I pay him total of 23500 now he doesn't pick up my call and a curier boy also don't pick up the phone I have the curier details and the bank through which I pay please help me out with it otherwise I'll die, , I m a student these guys are purely a great threat to Indian army please help me