I have a friend who had something similar happen, he got a frantic call from his grandmother who learned via a scam call that he was in jail across the country and needed bail money. This was a few years ago, so they couldn't have used a duplicate of his voice, but possible they were relying on imperfect memory.

Sweeping generalization, but elderly are and would likely prime targets of this kind of scam in the future since they likely have funds and are less likely to be educated in the state of the art for this kind of tech, not to mention a protective instinct.