My client is threatening to involve the police and demanding money. I finished his work and delivered it last year, but he hasn’t paid the remaining amount. He only gave me a partial payment by cheque.

Under Indian law, your client’s threats to involve the police and demand money are likely baseless. You have completed the work and delivered it, and received partial payment. You may need to file a civil suit to recover the remaining payment. Consult a lawyer to explore your legal options.