OP I'd like to respectfully request that you pay attention to what TheUltrElite said; this is a public space, and having his phone number up there is a breach of privacy for which he could file a lawsuit; I understand that you lost money to this dude, but having his phone number up here wouldn't solve anything unless the "Find my location" app works in India, which I don't know about.

You were fortunate to be duped by a local con artist, but you must understand that LocalBitcoin is a peer-to-peer platform with the same rules everywhere: "Do not release your coins until you confirm payment in your wallet." You broke the rules and were caught in the middle with sweet words on WhatsApp. Your only option now is to contact your local police, but as crypto is illegal in India, I doubt they would intervene. Best wishes