However, a few hours later, the same blocked number would get through.

I don't know where the preprogramed blocked number come from

So why was I receiving a call from a blocked number already in the CallBlocker

When done correctly, this issue usually does go away but with the caveat that a blocked number will ring once before going to call heaven.

Once you get it setup just add the calls calling you the most, after that you just add a call block number here and there

After switching to the Comcast modem upgrade I can no longer program number, block incoming calls or block number already programmed

The smaller font counter in the upper right corner does display "the number of times a blocked number has tried to call", but only when you select the "Block List" and scroll through each blocked number and you get the number of times for each blocked number.

At that time the device failed to allow me to do the review or remove the blocked number.

I'm not sure why it has to ring once from a blocked number

no problem, you can delete a blocked number that was made in error

The unit works well with my Panasonic KX-TG76xx phones and wired phone line so the #2 (to add a blocked number when away from my desk) works well

The other wire line phone rings once with a blocked number.

The unit works well with my Panasonic KX-TG76xx phones and wired phone line so the #2 (to add a blocked number when away from my desk) works well

Love it!l Easy to use and the telemarketer calls are becoming a thing of the past!

(they are not that great= l-o-n-g time to talk to a "tech"

Great Product,Great price, U R Great People to deal with Thanks