Our company did a job for a client that had damage to his apartment . This damage clean up was approved by his property manager that had got approval from there corporate office. The corporate office gave the customer a credit on his rent for his inconvenience and agreed to pay for the clean up to our company. When we gave the invoice to the customer to pay we found out he had taken the check that the corporate office sent him to pay us and had cashed it and spent the money . The customer claims he can not pay the invoice because he no longer has the money. How can I get paid for this job?