[sigilis]

A lawyer? That’s pretty obvious.

It’s what you do when anyone is in breach of contract or some other civil matter. You just sue them.

If it’s a criminal fraud, there’s other people who will help, we call those the authorities.

[nxm]

Money is already gone

[microgpt]

And then the court brings it back. Unless they're hiding in Russia?

[sigilis]

Oh, did this happen to you personally? If so, you have my sympathies.

If it's just a hypothetical, consider this:

The money doubles and everyone laughs about it in the end.