The final method in handling a 1 star review is to keep accumulating positive reviews. By doing this, you'll be moving that 1 star review further and further down the list so that it won't be the first review customers see when they come to your listing.
By meeting negative feedback with a positive response, you'll defuse the potential damage done to your sales.
Report Fake Reviews
Once again, when people notice the reviews are fake, which they eventually do, it just hurts the business overall. And, any honest positive reviews are completely ignored.