Dealing with unfair Google reviews is frustrating, but you aren't powerless....

https://medium.com/@carl.knight/how-to-write-a-calm-strategic-reply-while-you-wait-for-google-to-review-your-report-9fcce587b8dd

Dealing with unfair Google reviews is frustrating, but you aren't powerless. Some reviews can be removed if they clearly violate Google policies regarding spam, harassment, or conflicts of interest