Olx Army Fraud - Olx army fraud

I posted my grade **th pradeep book( chemistry) for sale on olx for ****. A person named amit messaged me on olx and asked my mobile no for enquiring.i gave him my no.and he made me a call asking me to reserve the book for him as he was interested in purchasing it for his son . He told me that his son will collect it from my place the other day and also he told me that he wanted to pay me immediately .
He immediately disconnected the call and called
again but through whatsapp and using different no. . He sent me a qr scan code of *rs to verify payment .Then he called me and asked me to be on call during transactions and sent me a qr for **** but after scanning the same **** got debited from my account rather than credit. I found him suspicious so asked to send his verification id's..and he sent * ID proves ( adhar card ,pan card , ration card and army canteen card) and claimed that he was a army officer and he also sent a pic of him in army uniform. He then again called me and sent a qr code of **** and told me that this time **** for the book and the money debited from my account will also be refunded but when I scanned it ** thousand got debited from my account
A net of ***** got debited from my account
When I checked my bank statement I panicked and made him talk with my parents and he asked them to scan another qr as to refund ** thousand but we refused .so he made a video call in which he was wearing army uniform but the shocking thing was it was *am and he was in uniform that too in a dark room .After a min he disconnected the call and blocked me
He told him name as VINOD and claimed to be from indian army