Who called from 6083381918

Call leave no msg when I call back they answer with JC Christensen a debt collector I don't have a debt with anyone right now.  Also call with other cell phone numbers, 218-206-9574  they are based out of Sartell MN  http://jcccollect.com/jcc.php

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i wish they  id themselves when calling my cell.

they call all the time early in the morning to late at night and never leave a message.
they are getting to be a pain in the back side.

I need their address.  I can't send a certified with return receipt letter to a post office box!  I tried and it was returned.  I work midnights, they won't quit calling and waking me up.

J C Christensen & Associates Inc
200 14th Ave.E.
Sartell, MN 56377-4500