This coupon is a "Partner Coupon". Certain companies that offer other kinds of services give these out to their customers, but they are always work through the national Circuit City offices. AAA just gave out a %10 off coupon a few weeks ago for Circuit City. I used it buying my Garmin navi system, in conjuction with the CC sale price. I had the same problem, the coupon didn't scan but the clerk just typed in the number and it went through. That was after he checked with his manager and I told him that AAA had sent me the coupon. I knew what I was talking about and it made it easier for the manager to go along with the coupon. Maybe if you know where the coupon comes from it would help to get the managers to sign off on it, in the event of the problem
AllConnect is a company that provides connection services for people who are moving to another city. If you go through them, they can set up your cable, internet, mail, electric, all those types of services. This coupon is part of a packet you get for using them.