I don't know over what time period, but I've had my main number for well over 15 years. I still don't get spam phone calls. I've had my business number for probably 6 years and it also doesn't get spam.

However, I've got a throw away number that I cycle out every few years for a few bucks and I get endless spam calls on it. Apparently I'm getting numbers that people have given up because they got too much spam. Now I'm worried if I ever need to change my main number I'll start getting crazy amounts of spam calls. Because for the throw away number I just check it once a week or if I need to get a code. I don't have the calls forwarded to my phone so I literally do not care about the spam.

Oh... You have no idea how some of us live.

9am to 8pm every day. Calls minutes apart and they even sometimes overlap.

Having to update everyone on my new number would be just as annoying and wouldn't even eliminate the spam problem.