What should I do if I CAN'T train my own replacement but they're holding my severance hostage?

Getting laid off at the end of the year, they're doing the whole "let's outsource everyone for cheap!" thing.

Anyways, the guy they want me to train does not speak english. Not well enough for me to understand on a Teams call anyways.

I'm just being real here, I'm not trying to be rude or anything.

He asks questions that I can barely understand and are also not at all relevant to my job...he doesn't understand WHAT I do, even when I explain it.

...also what I do is NOT really something I can train someone on. It's a design job. You gotta be a good designer. I'm not sure this guy has ever even opened Photoshop before.

So what the heck do I do? They're holding a severance package and unemployment benefits hostage so I do this training but uh...this guy is kind of untrainable.

Any advice?

Should I just kind of fake it best I can? In my entire tenure at this company I've never had a negative performance review, I've never had so much as a warning. They still need me for what I do for this job, etc...but uh...training my own replacement was never in my job description, it's not something I'm good at.