Hey,
Listening to today's episode, just a small technical answer to why you can't call any of those numbers that are spamming you. I work as a lead software engineer where we use a lot of telephony stuff for dealing with customers. Especially a lot of SMS (texting).
These numbers are all bought on-the-fly from a company like Twilio for the purpose of spamming people. They likely buy a new phone number for every little text blurb to avoid the fact that each is almost certainly classified as junk very fast by users.
When you buy a phone number for the purpose of sending Text messages, for a carrier like Twilio, you don't have to set up any sort of voice connection or any inbound text handling. You can literally just buy the phone number with an API and you can start sending texts. (Yes, this is John's Microservice Architecture FTW).
Companies like Twilio and carriers like Verizon, T-Mobile, etc, will generally track when a user replies "STOP", but they only track that per phone number, so when you change the phone number every time you send a text, you can get around the "STOP to opt out" stuff pretty easily.
So the spammers like Actblue/Winred have setup systems so when they want to send a spam text, they buy the phone number, do zero setup, send the text, de-register the phone number, rinse and repeat. So when you try to call it, the API provider like Twilio never even sends that phone call anywhere and they don't force the company to make it any different.
Couple that with the fact that political campaigns are exempt from a lot of 10DLC rules for texting and we end up where we are today. Thanks Elizabeth Warren!
Carriers like Twilio have ZERO interest in stopping this, since each message sent earns them about 1 cent, but if you imagine they send millions+ of these a day, after volume discounts, they're easily making $50-100k every time some campaign sends a stupid message. To everyone's phone number they have.
this isn't proprietary info, feel free to use it as you wish.
Cheers
Sir Blake, Baron of Bourbon and Rye