Caller ID: CBE group
I have blocked 3 or 4 of their numbers and they keep using new ones to try to call.  It is a stupid debt collection agency who doesn't say anything when you answer the phone.  There is just silence.  I am not WAITING to talk to somebody that called ME.  

My # is on the do-not-call list, and I have no outstanding debts.  They just keep calling, so I keep blocking.