Unknown foundation log book

DON'T ANSWER

I bring this to you knowing that some of my co-workers lost either their life or everything they had dear to them. One of my male co-workers who I'll call David for privacy, had gotten a call from an unknown number one a while we were on a job site cleaning up organs blood and any other things that shock you into a coma. David answered the phone but only static came through so he hung up and we went on but maybe 2 hours later maybe longer he got another call from the same number. He  answered it again, same as before it was all static but he didn't hang up right away and we heard breathing. the breathing was light at first but it progressed into panting, I became unnerved, David did too so he hung up. This kept happening for days, the calls started happening at night, days turned into weeks making him restless. David became restless, irritable, anxious. 

 Anytime I asked David what is happening with him, he deflected answering anything until the day he broke down and said the calls turned into someone threatening him and when he didn't do something they told him to someone he loved turned up dead. Anytime David would answer the calls around other people all anyone else would hear is static but he would start raving about how they wanted more and more, how nothing was ever enough for them. I began to suspect that he was killing his family but had no memory of it due to guilt and extreme paranoia but it wasn't long until he disappeared. It wasn't long until my boss, Miss Mandrake, started getting the calls too, it only took a few days before she disappeared for two weeks but her body was found strung up in the attic of her farm house.

  Miss. Mandrake was skinned from the waist down, wrists bound to the ceiling with the skinned flesh, lower abdomen slit to let her organs fall out but they were almost thrown across the room, her face was painted on with fresh flowers making it look  like a grotesque art piece. It was days before the autopsy actually took place and a cryptic note was found jammed into the cavity where her heart was supposed to be. The note said that if the reader answered their next phone call that they would be next, it was three minuets later that I got a call from an unknown number, I knew I shouldn't have answered it but I did.

 I don't know if I did it out of curiosity or to get answers, maybe a bit of both I guess, when I answered it was the same as David when it started just static. It wasn't long until it turned into breathing, then faint whispers and it started to make me feel crazy but for some reason I can't explain I kept answering the calls. It took about four days until I noticed I was missing time, at first it was five minuets then 15 it took three days for hours to go missing. Two days ago marked the third week of getting those calls, my whole family is missing and I keep waking up covered in blood, I'm afraid that I don't have long until I become like Miss. Mandrake. If you're reading this be careful of answering unknown numbers, you never know who or what you're answering, I don't regret answering that phone but i'm sorry the last thing i'll remember is writing this locked in my room.