Hello Lor311! Thank you for participating in the Apple Support Communities.
We understand that callers that are blocked by you are calling from another number in the next sequence. We'd like to look into this with you to see how we can help.
If these calls are fraudulent, the following resource has information on how to handle and report these: Recognize and avoid phishing messages, phony support calls, and other scams
In the article you visited prior to coming to Apple Support Communities, you can see how to silence unknown callers: Detect and block spam phone calls
Make it a great day!