Poor payment

This Company booked workers at our Backpackers hostel and paid for the few nights. Just before they were supposed to leave, the owner, Mr Lee Pieterse called and explained their work was not quite done and asked to extend (he could not say how long) and undertook to make payment. They left and never paid. We sent several mails to their office without any success. Two months later I gave the owner a personal call. He responded that he will follow up and made a payment for 30%, with the promise to have it cleared soon. In the last 3 months he did not respond to any communication with him. This Company, I learned since, has a very poor name both in their work delivery and paying debt. I want to warn all accommodation providers against accommodating them. They are sly and *******s.