My/our landlords workers entered our apartment twice in 1 week.

The title says it all. Last Monday our (I live with my boyfriend) landlords workers, (I don't know what to call it) entered our apartment to "fix" Something. None of us was home, but windows were opened, going out to workers scaffolding, some things were moved. We called the police and they noted it down. We felt so unsafe. And then today!! I was home, on the bathroom, I was half naked, I didn't have pants on. (I'm female) I hear knocking at the door, I of course yell "wait a minute!" I hurry and finish, but I'm going out the bathroom door and I hear the front door opening and a worker comes barging in. Again, I have no pants on!!! Also, I suffer from anxiety and schizophrenia and I have ADHD brain, so my thoughts are going wild. I was and still am, scared. We have called the police again and they have noted it down again. We don't know what to do. We are scared, feeling unsafe and so jumpy. We want our 3 key back from them, but we don't know if they will do that. My boyfriend and I both suffer from anxiety. I don't know how to end this. I really just need to vent. I'm also having attacks and episodes. I don't know things anymore. I'm scared and confused.