Sorry to hear about what you’re going through. It sounds like a very scary and tense situation, especially with the kids involved. If you haven’t yet explored mundane methods of property protection and legal repercussion for what these people are doing, I would urge you to consider those options too.
For magickal methods of property protection, a few spells come to mind. Here are some you might use:
If you work with a house spirit/home deity (or are interested in working with one), this guide explores some of the basics:
In addition to protecting the home, you might also consider upping protection on yourself and your kids. One of my favorite ways to bring protective energies on the go is enchanted jewelry. If you have a piece of jewelry you wear a lot, adding magickal intention can turn it into a protective amulet.
Spell jars are another good option for protective items, although unless you have some very small jars/bottles, they generally aren’t as portable as enchanted jewelry.
Whatever you choose to do, I hope you’re able to find peace and safety! Blessed be