[Joey]

I'm not good at advice much, but best plan is to try to change to a different service provider like what others have said. So that way you don't need to change your number, but then you can block his number with the new provider. As for facebook, like others have said, block him and report him for harassment. Lastly, if it keeps getting worse, try to get a restraining order, so that way he should be able to stop, and show that you are serious. Also, your current boyfriend can help too by telling your ex to stop harassing you, and try to put fear into your ex.