This happened a couple of years ago when I was about 14 or 15 (I am now 17), in the house where I currently live with my parents. On this particular day in August I had woken up early (about 6 or 7 am) and everyone in my house was awake. My dad was in the living room, my mom in her room, I was in the bathroom, and my sister in our room.
Now, the way our house is set up the restroom is at a right angle with my sister's and my room, my mom's room is next to ours, and down a little hall directly across from my mom's room is the living room. So, I was in the restroom brushing my teeth when I heard a woman's voice say something unintelligible. It sounded like "let me in, let me in." The voice didn't sound panicked or anything like that. It sounded like sad or something, I don't know how to explain it. At that moment I assumed it was my sister and I thought, "What does she want?" so I asked, "What?" and listened very carefully. When I didn't hear anything, I opened the door. Only to see, there was no one there. I tried to keep calm and kept telling myself it was one of my family members. Although deep down I knew it wasn't one of them because it did not sound like their voice.
When I was done I hurried into my room and asked my sister if she had called me. She said no and I told her what had happened. She said she had also heard it, but she had heard her name. When we went to ask our parents. They said they hadn't called us.
This is one of the many things that has happened to me in this house, but those are a story for another time.