Dealing with unfair Google reviews is frustrating, but you are not powerless....

https://technivorz.com/can-i-get-a-review-removed-if-it-mentions-events-that-never-happened/

Dealing with unfair Google reviews is frustrating, but you are not powerless. Google will remove reviews that clearly violate their content policies, though success is never guaranteed. The secret to a higher success rate is preparation