Niya Skute

I have a problem with security in my Linden home...sometimes I'm away from my computer and when I come back my avi is doing weird things. I now know that it is a neighbor. Somehow he comes in and controls the couches and beds in the home, which makes my avi move. I've asked him to stop and stay out of my home several times. I really don't know how he keeps getting in, as I have the door control set to locked. Is there a security wall or door I can put up to keep the pervs out?!?