Why don't the police do anything about cyber bullying?

[I want MOAR]

It happened to Scooby on youtube. He had to move house and take down his entire youtube channel, which he had since 2006.

Recently I heard on the news about this case of extreme harassment. This person took photo's of this guy off of his facebook and photoshopped them like people photoshop fakes of celebrities. Like he took his face and put it on the bunch of gay pornographic actors. He sent the photos to all his friends on facebook and mailed them to his parents and workplace. He also impersonated him using fake accounts and people thought he was responsible for saying cruel and offensive things, which lead him receiving a bunch of hatemail and threats from people he's never met. He had to move home and take all his information off the internet. This person was harassed for 1 and half years before he was able to get it to stop.
They got the police involved and it turned this person harassing this him lived in Bogota in Columbia. Law enforcement there were contacted about him but nothing was done.
I can't believe how bad harassment can get. Don't people realise how vulnerable they are on the internet?
Lol okay.... But I'm pretty sure this breaks some kind of law, even if it a minor one.

What are people meant to do when this happens? Just live with it? This guy I heard about sounded like his life was ruined by the harassment he received.