Texting

Need some advice how to deal with this situation. I am regular for few months now and can't deal with one situation at work place is responding to texts after I go home. I have told supervisor in written form I am not available after work, I go home and they text and ask questions about packages. What happened with this package or that package? Some of them just talk for the sake of talking, what's the point. I have no clue how to deal with it.