Samsung Dishwasher

A one day Job became a week's job as he took the dishwasher with him, and after final payment was made for the job, I realized that the back panel of our dishwasher was missing. When I phoned and made arrangements with him to bring it and fit it for us, he now he said, he will send it via couriers to us and I can fit it myself and if I want to take legal action against him, I can go ahead to do so.