HEB has a deceptive coupon practice. The HEB coupon policy states that you can combine a yellow in store coupon with a manufacturers coupon. However, it also states that you cannot combine a yellow in store coupon with the letter M on it with a manufacturers coupon. This is deceptive. What they do is entice you to buy a product that has the yellow coupon and when you get to the checkout and hand them your manufacturers coupon they won't accept it. So I called the consumer customer service line and they said they have received numerou... read full review »