Interesting that based on your former profession you are apparently provided with a secure phone and number for 25 years. Also interesting that your former career skills don't give you the idea to search google to see that it is indeed a spammer or telemarketer. Sounds like the special dynamite needs to get over themselves.
they called, i answered. they said something about the FBI. I accidentally hung up before i heard anything else. called back and was taken to weird answering machine.