It's how you say it ..

How a person says things can either get things done or get the blown up in his/her face.

Confrontational and scolding others would only put people on the defensive and get nothing done in the end. Instead it would only generate bad vibes.

There are more productive ways of saying things i.e.

"Why do you call me in the middle of the damn night?"

 A better way of telling someone not to call late at night is:

"Hey, you always call me when i want to go to bed. Could u call me earlier next time so that i won't be too sleepy to talk to you?"

Likewise,

"Who gave you permission to do this?"
"i'm sorry but you must get ask me if you want to do this next time, OK?"

"You are a bloody dumb person. How can you make such a mistake?"
"OK. we have a problem here. Do you have suggestions on how to rectify it?"