BharatPe — Online financial fraud

This person (scammer) who was using BharatPe made me pay him Rs.27, 300 via various transactions. He asked me scan QR code to receive the money for a product I was selling online. However, instead of credit my money got debited from my bank account. He also threatened me to physically torture me if I didn't transfer. Applied coercion on me and forced to make payment. I scanned the QR code sent and the money got debited. At first, I scanned QR code once for a small amount of Rs.4 where money got credited. Due to this, I thought the vendor was authentic but later realized that he was a fraudster. BharatPe has such scammers on their platform. Why so? Shouldn't there be stringent rules to prevent such scammers on a sensitive platform which involved transacting in money? I was transacting with him in good faith and I got conned. I fully expect BharatPe to help me in this scenario and refund my money.