God sees your heart to help, however, Let God deal with them, perhaps he has plans for People to speak to them who will be stronger in faith and in the word, Im not suggesting you are weak or don't know the gospel, But dealing with people who are captured by the devil themself, you will be falling into a dangerous place. If you can, pray for them, your heart for your friends will be noted by God and there you can help at most. Just keep showing what you believe in, soon if not sooner they will begin to notice that you are serving the true God. and they may turn around and see the light of things and will want what you got. But continue to pray for them. God bless.