DAA: You'll be waiting the rest of your life for mystery call site entries to inspire any lawsuit. Complaints to attorneys general and the FTC will get a little more traction. But understand that you must confront collection agencies directly if your goal is to halt or punish their mistreatment of your privacy and consumer rights. In your case, send a cease-comm via USPS Certified with card. The FTC and many consumer watchdogs explain how to draft one.

While a third party collector is unlikely to retain one exclusive client, don't assume the big brand name lenders have clean hands in choosing their collections henchmen. Space here is too short to list the lawbreaking agencies hired year upon year by the Bailout Banks. Don't get me started on the in-house Chase bullies either, who think that nine or twelve daily calls for a few weeks is a sane and normal procedure.

All: If you are receiving repeated, misdirected, and/or abusive calls from a third party debt collector, you may find relief in the provisions of the FDCPA, the Federal law which regulates collector behavior. Learn your rights at FTC-dot-gov. See also your state laws for additional support.
 Feb 10th, 2011
Just got my first call from this number, but every day get calls from one of ICS's many outlets. There is nothing I owe them and nothing I can tell them about anyone else they're supposedly "looking for".
@ontherunfromyou - I have all the other numbers from your list, but this one is new for me. Gives me hope maybe they'll stop soon (but then hope springs eternal). When I was a kid I collected baseball cards. Now I'm collecting ICS calls. I hope there's a HUGE class-act action against them as this page and any of us keeping records (or CID logs) will be "winners" rather than false debtors being harrassed by these scum.

PS.. @ in California - they are NOT associated with Chase, period. Forget that. They are the one and (fortunately only) ICS. Chase uses its own collection and investigation units and wouldn't be caught dead associating with a documented harassment firm like this one.
 Feb 09th, 2011
They ask to verify your address… WHATEVER YOU DO… DO NOT GIVE IT TO THEM… Ask what address do they have on file and watch them get mad. If they keep you on the phone for over 5 seconds then they know they can work on you. No sense arguing!
 Aug 23rd, 2010
IC Systems also call from:
603-589-7206 New Hampshire
703-656-9977 Virginia
202-367-9027 Washington DC
651-204-1350 Saint Paul, Minnesota
 Aug 23rd, 2010
Call all day every day 7 AM to 9 PM.
 May 06th, 2010
IC Systems is a collection agency for Chase
in California
 Apr 13th, 2010