Have your lawyer send a demand for takedown.
https://www.google.com/search?q=How+do+you+take+down+an+old+personal+website%3F and other ideas. It's a well done topic.
A few years back, a small ISP (which has since been swallowed by a larger company) gave me free webspace when I signed up for internet service. I built a very bad little website for my business, which still lives on the internet long after I stopped using the company.. I called the new company, and they say they cannot do anything. Any thoughts on how I can get this ghost site taken down?