I'm thinking what you really need to do at this point is smudge the house, and get with one of the many mediums on the site to try to get to the root of who is doing this and why. The types of scratches you're showing here do not look demonic in nature. Its important to keep calm and not let it get you down.
Its obvious that something is trying to get your attention, and is not happy. Now its just a matter of getting more details and then finding the best way to take care of it.
