Indian Army — Scammed by person claiming to be an army officer in Jammu

I wanted to sell my CLAT books as i changed my major in between of the course so this uncle approched me through olx and wanted all the books i had of CLAT. I gave him my no. and the amount he had to pay was 4000 so he asked for paytm and said i am an army officor and our all payments are transacted from our office through the office's website. as i heard army i trusted him blindly and did whatever he said so i was on call and he gave his phone to the another person working there . first he asked me to deposit 5 ruppee through paytm to confirm the transaction so i did that and 10 ruppees were credited in my account then he asked to do it for 4000 so that 8000 must be credited to mine. at that time i hesitated a bit and asked why do i have to transfer an all stuff. he said we are posted in jammu and here transaction are made like this for saftey purpose. so i did that too but then he said the money cannot be transfered because there was a session time out. (i had transfered 10, 000 till that time, ) so i had some argument with him so for proof he sent me his addhar card and canteen smart card so he asked me to do the transaction again then i realised he is a scammer but it was too late. He said today [6th september] he will transfer it through bank but when i called him he said he went to the bank but bank is also saying there is no other way as my account had very low balance and that to today is sunday i dont know which bank works on sundays . i have the addhar card and canteen card pic and his phone no. and screenshot of all the transaction i made through paytm. i want all my money to be refunded back and to track these fake users scammers and to be punish / fine them strictly . how can they use so reputed name of army to do such disrespectful act. Shame on such people...