Are you seriously suggesting their customers would commit murder over this? And how would admitting their faults make such an unstable, revenge-bent person not want to kill them?

Normal people don't get bent toward murder until all other options are exhausted. I mean this whole thing seems very rare so probably not, but jesus take some fucking ownership. Bald faced lying is pretty fucking enraging and despicable. I'm not sure what you are so worked up about.