Why was your anti-harassment order denied? If there was a hearing and the court determined on the evidence presented that it wasn't harassment, you would need to make a motion for reconsideration or revision within 10 days of the ruling to challenge it. If the case was dismissed for other reasons, like failure to follow proper procedures, you can try again. I'm going to link to an informational guide, but since you have been unsuccessful already, your best chance is to get an attorney.
You need to talk to the victim coordinator at the prosecutors office or an agency that helps victims of crimes because this forum is criminal defense attorneys where we would be representing the accused.