не разговаривают

don't talk

→ не
phrase Rare #41,089
don't talk Usually means “don't talk” or “aren't speaking.” With с + the instrumental case, it can mean “you don't speak to someone like that,” expressing that a way of speaking is inappropriate.
RU: Они давно не разговаривают.
EN: They haven't spoken to each other in a long time.

Я бы сказал, не разговаривают, но, насколько я помню, так было всегда.

I’d say they don’t talk to each other, but as far as I remember, it’s always been that way.

— Почти знаменит (2000)

Они не разговаривают.

They aren't talking.

С родителями так не разговаривают.

You don't talk to your parents like that.

С детьми так не разговаривают.

You don't talk to children like that.