Well one time i heard a scary voice when i was a little girl nd the lights were off for along time?

well this what happen i was little 6 or 7 and i was sleeping then i woke up i heard my mom and grandmom talking out in the living room and then i was in pitch darkness then i heard a ark voice like a demon ad it said "you can go ahead and tell your parents they wont find me" then i heard the voice in my closet ever since i was scared to sleep in the dark in my house and i dont go near mii closet dat much only to get my clothes and run away please help me who ever believes me please i want to know what the messge means im not crazy it thnk it was a spirit ??? pease help me please and thank you :)