Guru Gobind Singh College — Online fraud

This Manjeet uploaded an Ad on Facebook of a Nikon camera D5600 in affordable price, shared his Aadhaar card, army canteen id, selfies and told me to transfer half amount of the product so he can courier it from the base camp in Ahmadabad. However, I gave him 6000INR throgh Google pay and later he again asked me to complete the half payment so the item will be delivered to me once he send the confirmation to this courier agency called (overnite Express) meanwhile he was giving me all the update pics which show that he is in the courier office.

Then I asked him for some confirmation and more details about the courier so he gave me a fake receipt and said that the delivery man will gonna call me. Then the delivery man called me confirming about the product and the details given by me like address and name. He told me to inform manjeet that to send him the confirmation email that half payment is being done and the item can be delivered which is not at all the case anywhere with the courier agencies.

I told him that just let me meet the delivery man however Ill not take the item but before that I'll give you the half payment which he reject stating about the protocols this agency has because of the army facilities.
Then he ask me to give more money as in trust of Indian army I gave him full payment which is 12500 and then again told me to give 7100 as army policies and again 7000
I gave him total 27k . I lose all the hope I lose all the money please catch him ASAP . I want my money back