Indian Army — I'm complaining against an army who scammed me

Address:

Imphal, 797112

Hello i am a student and recently i saw an ad in olx of a phone whose price seem to be reasonable so i contacted the owner who turned out to be a indian army he told me to trust and also provided all his documents and regarding that i paid him 8000 and being a student that means a lot to me and he also send me the receipt that he parcel me the item but i didn't get any please help me refund my money am a student and i can't be able to pay off such a huge amount please