I have submitted to complaints on reviews for my business that one was not mine for I do no have that person who wrote it as a customer or the money amount, so they wrote a review for the wrong company and the other we took the person to court and have recordings that she was not truthful... they will not delete because it does not go against their rules.
So they allow people who lie and people who have not used your company to write stuff.
I HATE YELP.