What should I do if the cleaning staff has a conflict with the property company and cancels the contract and refuses to go to work?

You can apply for labor arbitration in the labor contract or directly sue the property company for compensation.

When a company dismisses its employees, it must follow due process. When the company dismisses its employees, it must issue a certificate of dissolution or termination of the contract to the employees, and immediately go through the formalities for the transfer of labor files and social insurance relations. It is also against the law that the company refuses to apply for the certificate of dissolution of labor relations.