Review on Panasonic Home Phone Call Blocker KX-TGA710B - Auto Call Blocking for Landline Phones by Tessa Dolan

I haven't blocked a single spam call in 2 weeks so I sent it back. I'm quite surprised that so many people like this box. It does what it is supposed to do, which is the block numbers being programmed or added to the device. The problem is that the spam calls I receive come from different numbers each time, even if they are from the same company or service. Caller IDs are spoofed so they simply generate a different number for each and every call. I like to put them aside and leave them there.