Indian Army — I too got frauded my vikas patel

2 days ago i saw a post on olx about oppo realme 2 so to further purchase it... I got into contact with that olx person named vikas patel most probably fake name... He sensed me his adhar card and army canteen card and some of his photos thinking of its authenticity... I transferred him 5500 rupees on his request... His phone no.[protected]... He assured me that my mobile will reach to me the very next day by "overnite express service"... Ok... Then one of his man called me the next day saying i have to pay further 4770 to verify because this is a government courier... Just their i got to know that he is fraud and while talking about the refund he tried to threatened me... Poor guy i don't know what to say but please help us to overcome those fraudster... Thank you!!