Every time you scold the kids for misbehaving, reflect on how they became this way.

Is one always threatening the other to get things done? Recollect how many times you have done that to them.

Do they roll their eyes in disdain and use profanities whenever they have the opportunity to? Reflect on who in your family or circle of friends do that. Remove these influences.

You hear compliments about your children from their friends and teachers but when they are with the family they are rude to one another. Is that how you are treating your spouse? What are you like when you are with your friends?

If your children are always shouting in the house, you have to stop shouting at them. Admit that it is your mistake to shout or continue living in the state of self destruction.