Now that they were treated decently, they just did not believe it. I emphasise the word "decently" because, of course, we cannot simply scuttle. Let him see that we are decent people, and let us behave decently to him.

What does it mean to behave decently?

in a way that is socially acceptable or good: She admitted that she hadn't always behaved decently.

What do you mean by decently?

1 : marked by moral integrity, kindness, and goodwill hard-working and decent folks it's very decent of them to help. 2a : conforming to standards of propriety, good taste, or morality decent behavior. b : modestly clothed. 3 : free from immodesty or obscenity decent language.