Is It A Gift Or Is Somethings Just Not Right

It all started when I was 13yrs. I would here people calling my name I wasn't scared, but after a few times I decided to answer to whom or what it was so I asked what do you want from me and I got a response saying just to be a friend, then days went by and I notice I was hearing more then one voice all together there were four two of them I was very much afraid of them I really thought I was going crazy until one late night my mom came up stairs to my room and asked me who are you talking to? And I told her no one of course I didn't want my mom to think I was going crazy, I would talk to these voice everyday and I would never come out of my room One night I heard a whistle come from out side me thinking it could be one of my friends came by to tell me hi so I looked out my window and seen a man but I couldn't see his face it was like he was all black with a black dog I told that person I'll be down in a minute I have to put my shoes on but that person didn't say anything but he was waving his hand for me to come to him, as I was going down stairs my mom had told me you are not going outside and told her well I don't want to be rude but my friend is outside calling me and she had told me no it's not your friend and said everyone in the house heard that whistle it echoed through out the whole house, and she had my two brothers go outside to see who it was but there was no one in sight. But ever since that night I've been seeing and I sense a man all in black can't see his face but he is calling me and I even dream of this thing calling me and every time I have this dream it's at the house where I started hearing voice talk to me. Well ever since then I hear people that are not there.