i'm with you, cnmc2c-
all phone ringers turned off. check.
caller id install. check.
answering service. check.
flashing landline phone. check
i've developed my own phone system, in response to drunken calls at late hours from xABF.
i bought an old landline phone that has flashing red lights when someone calls, which i turned the ringer off on.
the flashing red lights signal someone is calling, although i don't hear anything. i can then check my other cordless phone, which has caller id.
i know this sounds complicated, but it gives me a live phone during the night, but no ringing and if i'm awake, i can see it flash at my desk, check caller id and make a decision whether to answer it or not.
before i got the flashing landline phone, i used to pull my phone at night because xABF likes to call me when i'm sleeping. i was uncomfortalbe not having a live phone and the incessant ringing disturbed my peace.