You can include intentional infliction of emotional distress as a separate cause of action (claim) in your complaint.  Intentional infliction of emotional distress is an extreme and outrageous act  by the defendant (your ex) intended to cause and which did cause you emotional distress.  The various incidents you mentioned (harassment, threats, lying to the police to have you arrested, destruction of your property, locking you out, etc.) would provide evidence to support your case for intentional infliction of emotional distress.  Your damages (the amount you are seeking to recover in your lawsuit) would include compensatory damages and punitive damages.  Compensatory damages are to compensate you for the losses you incurred.  Punitive damages are to punish the defendant for intentional and malicious acts.