If they're really incapable of controlling themselves, they may even threaten you. This is why it's generally not a good idea to let a narcissist know you're going to block them ahead of time. Avoid the confrontation by just blocking their number and social media accounts and move on.
Simply put, narcissists hate being ignored. They probably want to make you feel ashamed, regretful, and rattled. They want to be in control and will go to any length to keep feeling empowered. It's critical to understand that a narcissist will not leave you alone the first time you ignore them.
Ignoring a narcissist may result in them trying to get your attention through various means, including apologizing and begging for forgiveness or smearing you to others. If you want a narcissist to go away, you must ignore them consistently and permanently, or they will likely try to hoover you back into their life.
You should never use the silent treatment on a narcissist because it is an emotionally stunted and immature form of stonewalling that narcissists use when they experience a narcissistic injury.
It's all a trick to reassert their control. So, in short, the answer is yes, a narcissist will continue to come back after “no contact” until their targets cut off all forms of narcissistic supply, leaving them no choice but to go find other prey upon which to feed.
Most narcissists will view being blocked as an act of aggression. A blocked narcissist won't have any ability to silence or control you, which is very important for them. This is highly likely to be an overwhelming and scary feeling for them.
Essentially, the point of the silent treatment is to make the victim feel confused, stressed, guilty, ashamed, not good enough, or unstable enough so that they would do what the manipulator wants.
Essentially, the narcissistic person's message is one of extreme disapproval to the degree that the silence renders the target so insignificant that he or she is ignored and becomes more or less nonexistent in the eyes of the narcissistic person.
The best way to shut down a narcissist is to walk away from them. If all else fails, you can physically remove yourself from the conversation. Even if they keep talking, simply turn around and walk away. If they follow you, close the door.
Ignoring the narcissist is the most effective way to sever ties from the person, although it is not easy to do. The narcissist will act out when they realize their host is rejecting them and will go to great extremes to reel the victim back in. Remember, you have provided the fuel that propels their disorder.
Narcissists don't like being ignored by anyone or anything. The narcissist perceives your withdrawal as a personal attack. People with narcissistic personality disorder don't understand healthy personal boundaries and won't suddenly have any respect for yours.
The most effective weapon to fend off narcissists is self-love. When you love yourself, it is more difficult for the narcissist to manipulate you and get under your skin. It will hurt them to know that you do not need them, that you are better off without them, and that you love yourself exactly as you are.
One of the main reasons why a narcissist ignores you is that they want to control you. More likely, they want to regain control of you. A narcissist uses ignoring people as a way to punish them.
Type As can also be dangerous to narcissists
Although they can be targeted, type A people can also become a narcissist's worst nightmare. One of the most important defenses against dark personalities is having strong boundaries yourself, and type A people are usually aware they have the right to build them.
A tactic that narcissists will often use once they realize that they've lost control over you is self-victimization. When a narcissist victimizes themselves it means that they label themselves as victims and blame their problems on external factors.
Narcissists can't take rejection and they see it as a personal attraction to their character. Even after long periods of the breakup, they can't accept the fact that you're moving on. Now that you're seeing someone else, your narcissistic ex would act like a predator.
So yes, narcissists can miss you in the sense that they feel bad when an emotional need isn't being met when you're not around and thus they want you back in their life. They need someone to boost their ego and make them feel good about themselves.
As a general rule of thumb, ignoring your ex and then getting back in contact later is used for getting an ex back. On the other hand, blocking an ex is probably one of the best ways to actually get over an ex, assuming you can keep them blocked.