My phone number is already on multiple lists like that; I get a minimum of three spam phone calls a day. I don't think that answering or not-answering is going

My phone number is already on multiple lists like that; I get a minimum of three spam phone calls a day. I don't think that answering or not-answering is going to make a significant dent. > Personally I have the "Silence Unknown Numbers," feature on my iPhone always toggled on. All unknown ..not in my contacts already..I never hear or see calling.. I might see I missed their call but my mind ignores missed call. I have a young child, in school and after-school activities; I don't want to risk missing a relevant phone call, as well as phone calls from actual doctors & such who need to get in touch with me. (And I can't easily whitelist every phone number some given office/person might end up using to reach me.)