no name, no message

Another nuisance call for me to block! Messages are never left, and they call every 2 minutes. Caller seems to have a bank of telephone exchanges beginning with area code 703 and 454as the 3-digit prefix. In my local area, caller ID shows Arlington and Alexandria (Virginia) I have noted same type of calls from 703-454-0986; 0994; 0987;0991 & 0989.

No name, no message. Have also received calls in the past few days from other 703-454-XXXX numbers.

called 4 times in a row, no message. I called back and it said it was a requested debt relief agency. I never requested debt relief from my non-existent student loans.

Another robo-called on a tie-line scam number, in the notorious Northern Virginia scam ring. They employ around two dozen numbers, mostly spoofed and programmed into their robo-dialers to deceive recipients, They all are blocked, but these retards are persist callers, amounting to harassment and telephone terrorism. Why aren't the Feds shutting down this ever-expanding plague of fraudulent operations, starting with Verizon and the agents for the operations?