I recently received a coupon to a National Retailer for a BOGO free deal. On the coupon, there were many brands that were excluded. Once I was in store, the brand of shoes that I was going to buy had a sign by it saying "coupon could not be used on brands A,B,C and D." The sign was made looking like an enlarged exclusion section on the coupon. The brand that I wanted to purchase was not excluded on the coupon. Can they exclude it in the store? The company emailed out the same coupon today without a correction. Don't stores have to honor the coupons that they send out?