Some friend he is.
Send him a letter bomb or hire a hit man who can break his hands and fingers so that he cannot dial your number. Seriously.
He is a black mailer and a loser not a friend. Show him his real face.
You have no choice other than telling your mother to let your father know about all this saga. Your father should know and understand that you are not interested in that black mailer anymore.
seriously change you number. trust me he is not gonna call your home he's just trying to scare you. but in case he does let your mom know in advance. u might wanna threaten to call the police to hehe to scare him like he's scaring you
^ good advice. Tell him that you would call the police if he calls your home. most likely he will be scared. You probably don't even need to change your cell number either. Scare him off with the threat of restraining orders.