The Do Not Call List only works if you are aggressive with reporting 'every, single, robo-call.' I went through a spell of having the same number repeatedly call and with every single one, I reported it to the Do Not Call List. Over time, the robo-calls for me have become almost non-existent.
So far starting in 2024, the only one that has called my landline is the American Red Cross asking for me to consider donating blood again. I have not had any robo-calls on my cell phone yet this year.
For the end of 2023, I had very little robo-calls on my landline. But, I had been aggressive with reporting the robo-calls throughout 2023, for my landline. For my cell phone, I had gotten a few robo-calls towards the end of 2023 that my scam call blocker app caught and also did not catch. I reported all of them. Throughout the year 2023, I reported all of the robo-calls on my cell phone.
The moral: Unless you are aggressive in the reporting of robo-calls and scam calls, you will continue to be harassed by these types of calls. The onus is on yourself to protect your own phone number(s.) Otherwise, you will become buried in these types of calls. Same thing goes for spam e-mail. If you are not aggressive in reporting them to the instigators' provider, then the spam e-mails will eventually bury you.
The ball is in your courts, people.

