I once called Comcast to ask why my call screening was not working for a particular number (an 800 number) and I was told that I did not have the capability to block 800, 866, etc. with my call screening option. So basically call screening is a joke, because the most annoying phone calls I receive are from 800 services or charities that use 800 or 866. Paying for unlisted numbers these days, no matter who your service provider is, is useless because telemarketers and telescammers use dialers and randomly dial numbers until someone picks up. However, I do have the option of not answering once I see the phone number of the caller.
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