HAR! No, the numbers are spoofed. Often they appear to come from the same exchange as my cell phone. I just don't answer these. I don't answer pretty much anything I don't recognize. Voice mail works fine.
NOMOROBO worked for a while, but now since they spoof the incoming it's near impossibe.
What does work is my phone now has a "Press 1 for Flying Ron" prompt. Most of the robospammers won't hear that nor press 1
We have Spectrum as an internet provider and their VoIP phone.
Spectrum has an excellent proprietary blocker.
Our home phone only allows those callers we add to our contacts to call us, all other calls never ring, nor do they go to voicemail.
We don't even know what numbers are blocked, but if one is curious, Spectrum offers you a way to see what scammers have been summarily blocked.
My mobile devices are protected by "Should I Answer", which only allows callers in my contacts to call me.
If a spammer or someone NOT in my contacts list tries to call, my device makes no noise, the unauthorized caller is simply intercepted and blocked, again the unauthorized caller never reaches my voicemail.
It is amazing, because the products do exactly what I wish them to do, stop unauthorized callers from bothering me.
My wife allows anyone to call her mobile device, but chooses to block most by using an algorithm and product offered by our provider, other callers she blocks as they ring.
Our mobile phone provider is AT&T.
There are choices out there that don't allow unwanted callers to leave voicemail messages.
I apply the same AUTHORIZED callers only to my text messages using an app named "TEXTRA". If you are unauthorized, your text will never reach my device.
My wife is curious and obsesses about each and every attempt to contact her, even on her personal devices. As a high school principal she has a district supplied mobile phone, where she gets calls from parents, district officials, teachers, universities, athletic officials, vendors, and staff.
These days you can enjoy peace and quiet, or "ding-a-ling ring ring ring" to your heart's content.