Pending payment dispute

Hello, I am running my small machine manufacturering business in mumbai. In November I sold my one machine to my supplier on against delivery payment terms. At the time of delivery he gave me cheque which I deposited after one month of dispatch. That cheque bounced then I redeposited cheque after a week again it bounced. At the time of paying advance he paid only 50,000 whear I told him to pay at least 100000. He paid me short amount after some time but still pending with large some of money. Due to large mount I did not raise the tax invoice as he did not paid me completely. He is taking to much time and still not ready to pay. Please guide me what to do . Police complaint or notice from advocate