Do not work like that. When I read reviews, I quickly notice if the reviewer seems to have an axe to grind. Reviews of true bad service seem to have a different favour than the reviews given by the people who are just trying to bad mouth someone/company, they too often try to make themselves look like angels and how dare this big bad person not meet their expectations.
Regardless of how entitled and axe-grindy a reviewer is, if they post a screenshot of an email written by the sole proprietor of the business telling them to fuck off and die or something similarly toxic, don't you think a lot of people would consciously avoid doing business with a person like that? It probably wouldn't help.