Why not just tell them you're leaving and they're not to come to your house, and you don't care about their punishments?
What does it matter if a made up religion gives you a made up label of DF'd........it's not real! To me it's like my little boy telling me I can't be in his gang anymore; it's just something to laugh at the childishness, and it makes no difference to my life.
Adolfius----it makes no difference to your life...and here is where you are very forunate!! I'm happy for you in that regard--I don't wish the devastating social/ emotional/ psychological/ physical/ financial consequences that JW family and congregational shunning or simply ostracism can have--and DOES HAVE--on so many lives.
I'm glad you're in ignorance of potential consequences...it's shows that your own circumstances are relatively 'safe'--and that's the way I'd rather see it. Read more of the posters' experiences/ stories here. You'll get more than you bargained for of answers that way, even while it's coming in piecemeal.
It's an education--I'll tell you that. One you don't want to have to acquire the hard way.