Indian Army — oneplus 6 phone

Address:

Ajmer, Rajasthan, 305901

[10:46, 1/8/2019] rohan: i purchased a one olus 6 from your army officer sanjay singh he told he is posted in jaisalmer rajasthan and want to sell his one plus 6 i got the reference from facebook where he posted the pic of the phone for trust he had send his army officer card and aadhar card the deal was like the total cost was 12000 i will pay 5000 when he send the army courier receipt and the 7000 after checking the phone to courier person.
He did send the courier receipt and ask me to send payment on goolge pay number i had send him 5k this time
Then the next day the courier person called me and told that your parcel is with me but u need to pay the full. Amount then i will get the clearance and then i will get my phone i talked to sanjay he told to pay the full amount and take the phone from courier so i send him 7000 on the paytm number after which the courier guy again called and told ur payment is done but now u need to pay 8107 rs for the insurance i again called sanjay and he told adjust with the courier guy they both denied my call after this the last call they picked up i told i dont want the phone u can keep your phone and give me back my payment i. E. 12000 they told its the army policy that the payment will be returned to u in 22 days and the payment is still not returned
Total amount is 12000 in two installment 5000 google pay and 7000 paytm number is mentioned below

I requested the army officer to look after this matter as the frauds are increasing day by day and by those who are protecting india how can we trust them? If they can do fraud with the citizens how can u trust them so much that they are in army.
Please look after this matter
Thank you
Mobile number sanjay singh [protected]
Mobile number courier person[protected]
Paytm and google pay number on which payment is done [protected] screenshot is posted below.

Chats screenshot is also uploaded below