Im more than AWARE this is not the best way to do this....but its the only option i had they are scared of him theres no other way to get the damn message across anymore
Depending on the nature of how he contacts you, you might have his spyware in your computer, which completely compromises you no matter what you do.
I don't know your history beforehand, but it seems like he just uses your social media to find you. If you change one, he'll just use another he knows you use to find you again. Purge yourself from the internet. Delete everything, your facebook, skype, every other social media site you use, erase yourself. Basically start a new life on the internet, never post your personal information in this new life of yours (else, he'll just use that to find you again on your social medias).
You can always try going under a proxy. Start using Tor, Opera, or a third party VPN service to hide your IP when you browse.