I really would like to know who is behind this number i believe its my old friend.

This person is saying they are planning to kill me, blow up my house on May 11 of this month. They called every day as a count down until they will do it. This is really scaring my family. It's a real scare deal i have call the cops  multiple time but they have not done a dame thing about it. If my family dies there death and mine will be on your shoulders please help us.