I have caller ID also. It tells me “unknown number”, but I can’t let it ring because my husband retires very early and he is not well. So I have to answer the thing. Most of the time I just hang up on them. Somehow I got roped into arguing with her. Probably because I’ve heard too much from the Rats today and I’m frustrated that we don’t have a candidate to defeat them.
That makes it more difficult. I think you are stuck with answering it.