Don't overthink the situation. If you've confronted someone about their behavior and things haven't improved, accept that you've done as much as you possibly could to improve relations with them.
- You can’t make someone be polite if they want to be rude, and it is not your responsibility to try to “fix” them. In fact, trying too hard to force a change in their behavior will often make them behave worse instead of better. Sometimes you just have to accept people’s rudeness, realize it is not your fault, and let them find their own solutions
