Well, it finally happened. Someone is spoofing my phone number and is making unsolicited phone calls with it. It is unimaginable to me how this happens in 2018. In my opinion, this shouldn't be an impossible problem to solve, I refuse to believe that there isn't some sort of authentication that happens when my provider lets me use their network. And as a result, they should easily be able to at least block spoofers from calling on their network.
I am supporting https://www.change.org/p/stop-phone-spoofing-now, I have donated money and I think you should at least sign this.