People Responding With Como by ChiefBeef08

What does responding with "¿Qué?" often sound like to a native Spanish speaker?
To a native Spanish speaker, responding with "¿Qué?" sounds too blunt, brusque, and sometimes rude.

What is another polite response when someone says something you didn't understand in Mexican Spanish?
Another polite response when someone says something you didn't understand in Mexican Spanish is "¿Mande?"