Voices Downstairs

This happened to me years a go while I was staying the night at my grandma's. If you have read my other story you might think that this is the same grandma but this time it is my mum's mother. Ok here it goes.

When I was younger, my cousins and I used to have sleepovers at my grandma's house. For some reason a lot of the times I would always be the last one downstairs and had to turn off the lights. I hated this cause I know I was young and scared of the dark but I used to run so fast upstairs once the lights were out. Then one night while I was laying in bed with my cousin in the front room, I heard a voice call my name. It was dead quiet. It was really late and everyone was asleep. It was a female voice and it was talking in a whisper but I could hear it like it was right next to me. It was coming from downstairs. I was really freaked out and didn't know what to do. At the time I didn't even think to wake up my cousin. This went on for a couple of minutes. The voice just kept calling my name and telling me to come to it. Eventually I put the cover over my head and lay close to my cousin until I fell asleep. That was the only time I ever heard the voice.

When I was older my brother were having a conversation about ghost's and stuff. I told him about my experience at grandma's house and to my astonishment he said the same thing happened to him. The only difference in his story was that he said it happened to him when he woke up to go to the bathroom. He said he heard a female voice calling his name. My grandmother's steps creaks when you walk up them and he said he could hear someone coming up the steps. He ran back to the room and closed the door. I think that was the only time that happened to him as well. I haven't asked any of my cousin's if they had ever experienced anything but I think I will. The thing that used to get me was the fact that my grandparent's are really religious so how could this happen in their home?

I don't know if this has anything to do with anything but a couple of times I have woken up to a loud scream in my ear and there was no one around me and it was not a dream. It felt external.

What do you guys think?