I have some sort of digital answering machine as part of my wireless home phone. The whole system is set to "silent operation" - no ringer. I think it holds 50 messages and ten rolls the oldest one out to accept the newest. All my junk calls come in on that number, and I use that phone to call commercial establishments so they can capture my caller ID, then call me to be ignored. I never-ever check messages on that system.
I have a cell phone. If I want you to call me I have given you that number and entered you in my contact list so I can see who is calling. (I do have a few numbers of folks who somehow found my cell phone - they are entered in the contact list as "Ignore #_" and then the caller/company name.
When I call a business or government office I expect the phone to be answered using the basic formula of "Good (time of day). Name of company/government agency. This is (name of person. How may i help you/direct your call?" Often I get a "Hello", or even worse "Who is this?" Depending on just how badly I want to transact business with the place I am calling I will either ask for customer service right then, and lay into them, or call back and lay into them.
stay safe.
PS - does anybody need my home number?