I was contacted by this number today. They identified themselves as ICS and asked me to "verify" my birthday and then hung up when I asked "Who is ICS?"

I called back, again asking "Please explain, who is ICS?"  I was asked for my name. I gave Mrs. <lastname> and said again, "I need to know, who is ICS?"  They replied, "Miss <lastname>, as in <my minor daughter's name>?"   Sigh. "I have no business relationship with any ICS.  Who are they, please?"  "The company I work for."  With that, they hung up again.