SpamBlocker

If you're on Android, I highly recommend: https://github.com/aj3423/SpamBlocker. It works so well, it gave me my phone back. It has all the granularity you wish texting and phone apps had. The only slight neg is all that flexibility can make first-time set up a bit tricky, just LLM it.

I think you got lucky the first time. Traditional political candidate campaigns and mainstream parties are supposed to comply with some FEC regs about respecting unsub replies (I think it's tied to getting broad access lists and maybe reduced rates for campaigns), however a LOT of texts and robo-calls (whether supporting candidates or initiatives) are now funded by PACs who seem to have no issue using spammer SIM farms and AFAIC are under no regs. Since there's no way to tell PAC texts from actual candidate-funded texts, and the PACs seem to now be the vast majority, I always hit the checkbox to block and report as SPAM to my telco. Not that it'll help much but if it's an actual candidate, the telcos whitelist them anyway (because of course politicians passed a law that requires them to), and if it's a PAC maybe it'll burn their SIM farm

Alternative for the power-users: https://github.com/aj3423/SpamBlocker

For anybody on an android phone,I highly recommend https://github.com/aj3423/SpamBlocker It is highly configurable with every feature I've ever wanted but could never find for call filtering in the the app store. I've essentially set mine so that if the calling number is not in my contacts, or is not a number I've called in the last 90 days, the phone never runs and the call is sent to voice mail. But it supports lots of other mechanisms to filter with like regex, or how many times the number has called within a given timeframe.