If you are harassed by phone or online and are even threatened with outing, contact the nearest sex worker advice center and use their help to file a criminal complaint.
An ad makes it easier to determine the stalker's unique identity. As a precaution, save all text messages and emails in connection with these criminal acts. Vogel Strauss does not help in many cases. You can get sick from this mental stress. The same applies to blackmail with outing if you work anonymously. Contact competent consultants, seek protection, stay strong. Many stalkers or men who penetrate harassment assume that they duck away out of fear and do not fight back, then the psychological terror continues forever.