“This is true ONLY if the soul ever had a physical body prior to being recruited by satan’s minions.”
These are not demons, they are just misguided souls. The demons can be cast out, but not saved as they are in the category of fallen angels who never had physical bodies.
Just yesterday I was looking for an old tape recording that I made many years ago that’s about a half hour long. It made the hair stand up on the back of your neck when you listened to it. This one was pure nasty.... If you try to deal with them yourself they suck the energy right out of your body. The only thing that can protect you is the Holy Spirit as they can’t take that level of energy.
Provide some Scripture to back up your claims.
Those are not "misguided souls". And even if they were they had their chance while living and it's over.