Things Uncle Dale did that you probably should not (on-going):
(After I finished a job an agency told me they never paid the amount we agreed on before the job, and if I demanded it, they would never hire me again.)
I get it! You believe that I work for you. Let me disabuse of that; I do not. I’m a contractor. You need me more than I need you. Pay me what we agreed and when you need me again feel free to call, but remember you will have to say please.
(They did and they did and they did. Oh, they are not in business any more)