Stone wall eliminates communication

Stonewalling: To refuse to cooperate, especially in supplying information.  It is employed by those who are indifferent and who wish to punish.  When passion exists (a very positive or very negative emotion), stonewalling is impossible.  The one who endures stonewalling is often clueless about what the conflict is about.  It is the epitome of an unfair fighting strategy.  One is left to fill in the blanks with the most extreme, even irrational conclusions.