Ask Why do some clients always find something minor to complain about even when the work exceeds what they asked for?

[Edward22]

You deliver more than what was asked, the work is clean, the deadline was met, and somehow there is still a small issue that gets brought up. It is rarely about the work itself. Sometimes it feels like the complaint is just part of how certain clients operate, maybe to feel like they are in control or to chip away at the final payment. It is one of the more frustrating patterns in freelancing. Have you noticed this with certain types of clients, and how do you deal with it?