A demand for public apology and retraction of defamation of character / defamatory comments, threatening to take legal action.
We strongly disagree with your comment on [specify defamation of character / defamatory comment]. We believe your comment is inaccurate and potentially defamatory. It has already caused irreparable damages to [Name / Company / Product]. We demand that you retract such comments immediately [and issue a public apology and clarification to that effect]. If no action is taken by [date], we shall have no choice but to take further legal actions against you.
defamation of character,