Do you realize when you are confronted with the rudeness of another, instead of competing to prove how petty you can be, seek to show how reasonable and in control you are in each moment?
Understanding there is never any advantage to be gained by being rude. Why? No one will think more highly of you, be persuaded by rudeness, or prove any point that you are trying to make.
Beginning today take control. How? Being polite and respectful will not always improve the situation, but it will always leave you with no regrets over things you may say or do when you are rude.