And they understand that you will not refuse them, because who else will finish the repair. If you did not like their work, and they do not work in good faith, then pay the but that they did only efficiently. Many people argue that the performance of qualitative work will be if you hire one specialist for the entire object. But this is not true. There are, of course, people are “on the whole master”, but how many you know such? Therefore, it is better to invite one master to align the floors, another for painting work.