My Taken But Not Recieved the Product in return

My Money Taken ?5000 from my Debit card into his Paytm Account in return of Laptop product which I was buying from him Actually He said that "he stay in Kochi, In the Custom Duty department of Airlines Services & he have 2 pieces of Laptop, which he got as a gift from his friend", I saw his Advertisement on Quikr, I personally Contacted Him to the Number Provided, he asked me to deposit ?5000 in his Account but HDFC bank Denied me, then I asked him about Debit Transaction, he agreed and asked me to pay via his Paytm Account with My Debit Card, I paid him and He Promised me to Ship Courier the Product via Bluedart Services, but I ask him to give me the Bluedart Waybill or Ref no. & his Aadhar Card no. He is picking my Call & and now his phone is Coming as Switched Off. I have the Bill receipt of the Product i.e. Image got via WhatsApp. and Now also he hadn't Replied me and His Phone is Switched Off but I Have the Message of the transaction done via my Debit Card to His Paytm Account, also I have the Txn id and Paytm POS. He Said that I will receive my Product At a span of 2 days i.e. 48 hrs, and also he had given me his Bank account Number and IFSC code Prior to the Payment done to him by me via Debit card to his Paytm account. Any Suggestion, so what can I Do to this Crime. Please Help me!