Delete SEO Blogs made by an seo freelancer

My primary concern with our current SEO blogs is rampant misspelling. This error predominantly appears within the body of the posts, which brings about a negative image for the company. I want all the blogs about our company created by the seo hire taken down. Her work has made us look so bad. At the time I didn't know of these things now we are finding they are all over Google first searches and just need taken down