This is an isolated incident. It is funny though they look like immigrants themselves, speaking English with accent.
Xiao-man, you are kind of girl who does not take any crap (or sxxx), and I admire you for that. I like to reason with people, but you know my oral English often fails me. That is why I am still trying to improve my oral English skills, so I will be better prepared for something like this in the future.
Thanks! Xiao-man. All your responses warmed my heart.