Sorry to hear that. I think they disrespect you because you don’t say anything about their behavior. And they know that they can get away with being rude & disrespectful to you.

Maybe it has to do with the 20-30 year age gap, idk. They shouldn’t be treating you like that. I’d say something if I were you as nicely as I could. Maybe they might start treating you better if they were unaware of how they were coming across to you.

If you think that they’d just get upset at you though, then just ignore them.