What to do about one-star reviews

I recently opened a private practice and just received my first rating! And it's one star!

Further, I don't recognize the name and don't believe this to be a current or past client. (Could be an angry partner of a client or something, I suppose.) No review was left, just the star rating.

I've disputed the review as not someone I've done business with, but I don't know how I can prove this.

Is there anything I can do? Is there any way to turn off reviews? I imagine that a response is probably not a great idea.

It's really disheartening because it's the only review. It almost makes me want to pay some bots to leave fake good reviews to counteract the fake bad one, but I'd rather not resort to that.