This number calls me constantly. I'm on the don not call list.

this has been reported as fraternal order of police, a charity (?). they are allowed to call you.
you will have to answer it and tell them to "put you on their do not call list" then call your local representatives and complain to them and then your state senator and congressmen. oh, politicians are allowed to call you also. dnc does not apply to them. that's the law. doesn't do any good to complain here, raise hell with the politicians and demand that dnc be applied to everyone........

This number called twice, the first  time they hung up on my answering.  The second time I got a loud screech, the type that is injurious to your ear drum.  This should be regarded as assault by telephone which should be regarded to be a crime.  My ear still is ringing from the screech.  At one time I donated to the fraternal order of police, two or three different organizations in fact--but if this is them forget it, never again!  Beware 2152496168!!!

Someone from this number keeps calling my home but they never leave a message.  i would like it to stop!

This # comes up unknown on caller ID.   They are sellers of a home security system.