The voice

Pick up the phone.a voice said in my head,I was there in my cave alone...ring ring..I didn't want to pick up. Something was telling me to. I walked a couple steps to the phone. "Hello?"
"Is this ..." "Who is asking?" I said with a deep voice keeping my voice in the deepest part of my throat. "Does it matter?" My hands drowning in a pool of sweat. "Yes"..at that moment it was quiet, no one answered. Was the voice gone? "Well I just wanted to make sure you were at home..safely." How did this voice know where I was and if I was alone. Should I have said it was me? "Who are u?" My voice got higher and I was breathing like I was dying. No answer? "Who is this!" Thats when my voices decided to roll from the deepest part of my throat... Still no answer. "Tell me or I'll hang up." My ear heard breathing, the voice didn't answer...I didn't hang up yet I wanted to see what was going on,I was so confused. Right as I was getting ready to touch the button that voice answered. "Your worst nightmare