You mean don't take them well or plainly blank you out when you try it?
some people have just gone with : ya; uh-huh or rozumiem. I make corrections if and when the meaning is lost through mistakes. If they don't correct their speaking that's fine by me but no way in hell am I going to just have a chat with them and listen to that- it's too tiring
some folk really do have to be somewhere else, business meetings etc. arrange your timetable so that if they don't turn up it causes little inconvenience to you.
Thanks but I like how I do things- more kids for you to teach I guess