What can be expected today after a replacement when picking up a vehicle?

Luckily until now I have been spared by larger reperatures, however, it caught me a week ago. Ignition lock defective. Cost point approx. 800 euros. The workshop is not a branch but a contract dealer. I think it would have to be particularly stimulating to “stand out”! I expect a sucked and washed car (should it be normal in the meantime or?). Admittedly, I am already a little dissatisfied. Announced calls for diagnosis did not take place. On my part, the information that the car will stay there for at least a week was only given on several calls. Now you wait for a programming key and the ignition lock. Let’s assume, however, that the diagnosis was wrong. However, the parts are already installed and still nothing is going on. In this case, I would have to pay for this too? Purely from the logic I don’t know why I should do this because I give the car into professional hands, then expect the correct error diagnosis.