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.
Had them call me twice today. Once from 201-283-9786 and another from 609-318-6204. I called them back and pressed 2 to have me placed on their do not list for both numbers.
A foreign sounding guy, maybe Asian, says he wants to pay his bill with 'green dot'. I think he is saying he is with 'Asian tech #1" he says his invoice number is 123456. He has left several messages but I have never answered the phone. I have unlisted number and this is not a business number
The phone company does not have to sell your phone number because these pests just call any 10digit number to talk to anyone. But the phone company does sell information because information that was only known to the phone company is now posted online and the only place it could have come from is the phone company.