Ignore. It's not about confused silence, but about a measured cold-blooded distance: this method is useful in those cases when an open conflict is unacceptable. Hamya, the aggressor wants to receive a response - live emotions, scandal or sensation: do not let yourself be used as a source of energy "recharge".
But how to calm down when you drop in your direction? Use simple actions: inhale deeper, count to ten to yourself, imagine a deaf glass wall between yourself and the offender ... or mentally draw a wart to him: humor will help you come to life.
Keep balance. Of course, it is difficult not to succumb to the negative in response to an insult, a sarcastic mockery or frank rudeness. But calmness will help you to control the situation and, in the end, to overcome the conflict. The interlocutor seeming invulnerable is a difficult prey for the aggressor: his attacks hit the target, confusion increases, and behavior begins to look ridiculous and stupid. Speak meticulously and clearly, do not be afraid to look at the offender in the eyes - cold-blooded speech and a direct look can confuse even a burnt boor.
Be open and enjoy your rights. Do not suffer discomfort, being afraid to break the status quo - the aggressor has already achieved this by his behavior. Do not hesitate to state the essence of the problem ("you are tactless", "you cross borders", "you exceed the powers") and involve competent people in its decision. A call to the hotline, a statement to a higher management, a complaint to the Consumer Rights Protection Society can be very effective. Remember: silence is the best indulgence for a boor.