Though in this case, the scammer is pretending to be a single person. But even if it was a company, the proper response is, "Well, I've already voided the check. Sort that shit out with your manager. We'll do the work when the check clears." That last line because the overpaying scam should be obvious these days. Sucks if you're desperate for some work but that's the kind of feeling these pieces of shit are targeting.