These people are using fake numbers and fake names. The Credit Voice is their real name, the name they hold on their telemarketing license, which is in Florida. The calls are coming from 495 Semoran Blvd, Casselberry, Florida. Mike Hilgar runs the place. Complain to the FTC and your state's Attorney General. The FTC already has many complaints on them. Many Attorney General's in different states also have several complaints on these people. Indiana Attorney General has already filed suit against them. The more complaints these organizations get, the sooner they can be stopped.
I dialed back the number because I missed it while working outside. I was informed that the telephone number was not in service at this time. Lot of good that Do Not Call List does. (Another failure under Bush.)
These folks are criminal scammers, and call from a variety of numbers with a variety of scams. There is NO way to stop them from calling... but sure wish that there was (am on the DNC list ... but that doesn't seem to be of any help these days).