I can appreciate the frustration you must be feeling. Working with clients seems to highlight the best and worst of humanity. I believe that you should always

I can appreciate the frustration you must be feeling. Working with clients seems to highlight the best and worst of humanity. I believe that you should always lead with your best. A situation such as this can definitely impact your business in a negative way. It's more of a one-sided allegation and your choice of wording is defamatory. At this point, consider hiring a lawyer. They may not be able to tell you what you should do, but they can definitely tell you what NOT to do, which is just as important sometimes. Good luck.