Spam Calls on my Voice Line (Not mobile line)

Comcast can already identify spoofed caller IDs because they don't have the 'V' (for verified) by their number.  The filters provided to block potential spam calls are good but they need one more addition.  They need to block unverified calls.  Let me give you some numbers on a recent analysis I made from my own phone log.  I dumped a month's worth of my call log into Excel.  I received over 500 total calls that month.  With the filters already in place 27% were blocked.  If I had been allowed to block unverified calls, that percentage would have risen to 93%.  That's a HUGE improvement.  It can't be that hard.  As a professional programmer, writing code for 50+ years you already have something very close.  Somewhere you have a statement that looks something like this: If block anonymous=true & current call=anonymous, block it.  All you need is this statement: If block unverified=true & current call=unverified, block it.  One of the concerns about overly aggressive blocking is missing a legitimate call.  Of the unverified calls in my data NONE of them were legitimate.

Thank you.