Silkroute International Pty. Ltd. - Payment not done

We are Octopus Tech Solutions, a well-known outsourcing company. We served Silkroute-International with call centre services by hiring agents for their needed process. However, Silkroute-International hasn't paid us till now and took our services for a period of ** days. This kind of behaviour is totally unprofessional and it speaks about how this company operates and deals with its various business associates in the corporate industry. It is completely disappointing that we are chasing a company like this in order to get our payment.