If you believe that someone’s blog is providing material that could be considered defamatory or libelous, there are a few things you can do.
First, you can try to contact the blog owner directly to discuss the situation. You may be able to reach them through their website or blog, or by email.
If you’re unable to reach them, or if the blogger refuses to take down the blog post, you can file a complaint with the appropriate legal authorities.
Depending on the jurisdiction in which you reside, there may be specific laws that prohibit defamation and libel on the internet. If you live in a country with such laws, you may be able to file a legal complaint directly with the court or prosecutor responsible for enforcing those laws.
In many cases, however, simply contacting the blogger and letting them know that your content is considered defamatory or libelous will be enough to get the post taken down. If not, exercising your legal rights may be your best option.