Has anyone talked to these four witches?
The witches I have known are always more than willing to talk and tell you what their plans are or why they have come to a place. If you draw them out, you may be able to show them Jesus.
Remember, greater is He that is in you than he that is in the world.
I doubt that there is any congregation alive that satan doesn’t have his people visiting. That is one of his ploys to undermine the church group. You need to be as wise as serpents and gentle as doves. I also suggest that those in any kind of authority position, including worship, be reminded to pray over and re-oil your homes, especially your beds and bedrooms.
Remember also that where sin abounds, grace does much more abound. You have all authority. Don’t be afraid to use it. You will be surprised at what a farce, wimp, worm satan is.
God bless you all.