As with past calls, stay on line long enough to hear answering machine and to ask for "lady of the house" when they get no response they hang up. I never answer my phone any more unless I am absolutely certain who is calling. Even my mother, who shows as private caller, leaves a message, because she knows I won't answer. What is their problem?
Repeated calls from 1-972-502-9798 have become a nuisance. I am on the Do Not Call Registry; these calls should be blocked. This morning the call came at 8:00 am!