Prank Caller

There's this prank caller that has been calling my number. It has gone on for some time already. Each time I answer his call, he will remain silent then hang up, or hang up the moment I answer. He will call several times each time. Annoyed with this, I posted it on Facebook for the first time as a warning to this person. Why would I do that? Well, cause there's a possibility that the person is someone in my friend list. Why do I think so? Well, lets just put it, not everyone in the friend list is actually a friend. Namely former co-workers, friendnemies, etc. After the initial warning on fb, that prank caller was on mission again. So as per my first warning, I published the prank cal let's number. Yet, still unperturbed, this person kept calling. One day, I SMS that person asking who he is. He was afraid for a couple of days, then he called again. Hence, I answered the prank caller when he called again. That's how I found out it's a guy. I thought that there's a possibility that it's a girl. Since I do know quite a number of  bitches. I couldn't understand a word he said. He was saying two words maybe three repetitively. Either he's a Pokemon fan, or a retard, cause he sounded like a baby learning to speak. So I just hung up. I did mention it on fb. Today, he called again. So I just ignored it. Childish people are such nuisance.