Is it normal mom's bf opened our door with a screwdriver to ask us questions?

We don’t get along with this guy. Our dad died a few years ago. He is not that much older than us and he thinks he is our dad and he is in charge. He is always swearing at us and treating us bad.

We had practice early in the morning and he kept waking us UP AT 1:30 AND 3:30 am to ask us some questions and see if we had boys in there. (we never do) We freaked out because can’t you knock) My mom is mad at us for waking her up and says we need to behave and make her bf happy.

We went back to our grandparents and now our mom is mad at us and texted us that she is calling the cops if we don’t come home. My grandparents and her are fighting a lot.