Person keeps continually calling my cell phone...does not leave message. When I call the number back.....someone picks up but doesn't say anything or the line is constantly busy.

This number has been calling me all day but when i answer the phone there is nothing. When i call the number back its A. Busy or B. Someone answers but then hangs up.

I am also being bombarded with calls to my cellular phone from 856-489-8437.  There is only silence if I answer the call, and a busy signal or silence if the call gets  picked up.  My caller ID identifies the caller as TRO, which means nothing to me.  Does anyone know anything more???

I keep receiving calls from 856-489-8437 it comes up on my caller id as TRO, Which means nothing to me. When I call it back they pick it up and hang up on me or will not say anything in return.