I NEED THIS – CIA - Number Search & Spam Warning for Unwanted Calls Review

so I have a question, You can block certain people from calling your correct????? if not, this won't work for me. I read the response and some people said it does while others with more recent responses said it doesn't….. I hope it does
Review by Misha3960 on CIA - Number Search & Spam Warning for Unwanted Calls.