Debt collector from CCS (Credit Bureau of Bismarck, Inc) out of Bismark, ND.  It's an automated robo caller that they use with spoofed numbers so you would answer.  The credibility of this collection agency isn't the best. Again if you just happen to be turned into a collection agency there is NO LAW saying you have to talk to these people.  The debt is between you and the person who you owe money too.