Do you get "unidentified" or 8** phone calls. Here is what to do.

If you get 800, 866 or any 8** calls, and the number is captured by your phone on a caller list, then you can go to http://800notes.com/ to investigate who is calling.  Enter the number and you will see what the experience of others is.

I've used this many times and find indispensable in protecting my privacy.  Check for yourself.