I have been wondering for 2 years why the father of my child has been calling me and upon picking up, says nothing. Two years ago, I went to the police with my 6 year old to report an assault that she told me her father had done to her. It was involved, with ropes and being strung up so that only the top of her head was touching the ground. The police found conflicting evidence and did not pursue charges. We have not heard from him since however, irregularly and sometimes frequently (every week) I get an unknown caller that does not say anything when I answer, in fact I cannot ever hear any background noice either, it is mute. if I leave the connection open, the caller never hangs up. A male friend suggested the other day that he might be keeping some kind of log to say (in the event of a custody battle) that he has been contacting our child and that they have been communicating. What do you think? Does anyone have any other ideas to offer? Why would this behaviour be persisting over 2 years?