I try of ignore people who behave like that.Only polite people are viewed as human beings and respected.
I hate rudeness, inconsideration and arrogance. Most of my life I gave the offender a good telling off or at least an eye roll, but now I realize at my age, that their behavior says more about them than it does about me, so I do my best to avoid being in situations where the behavior or words of others disturb me.
When I can't I try to get over my anger as quick as possible.
My feed back to a rude behaviour depends on who has perform such this behaviour....