Uber Holding My Money | bank won't reverse wire transfer

I'm in a difficult situation and trying to figure out my next steps.

bank won't reverse wire transfer. I've been dealing with this for about 4 weeks now and the situation isn't improving.

The amount being held/disputed is approximately $19,514. I have tried contacting their legal department 9 times with no resolution.

Has anyone been through something similar? What worked for you?

NAL, but from what I've read, you should send a written demand. Of course the details matter a lot here.