Dickey's Barbecue Pit Fool Me Once Tempe Arizona

Signed up for Dickey's "Big Yellow Cup Club" to get offers via email. Received an email in response with an offer for a free "Big Yellow Cup" drink at Dickey's, no purchase necessary, nothing saying coupon could not be combined with any other offer. A few days later, received another coupon via email, this time for my birthdasy (which had just passed) offering BOGO (Buy One, Get One free) sandwich. Both coupons were only good for about 2 weeks, so I went in the next week, ordered my 2 sandwiches and a big Yellow Cup, and was told they do not accept more than one coupon offer per purchase. This was a 100+ degree day in Arizona, and I had specifically anticipated a nice big drink on my walk back across campus. I showed the guy that the coupons were for two different menu items, and they did not say not ot be used with any other offer, and he mumbled something about having a lot of promotions, and they couldn't accept more than pone coupon per purchase. I said a third time that I thought they were legally obligated to honor both coupons, and he ignored that and instead told me my alleged total. I pointed out to him that the total he had given me was wrong - it should have been $6.25 for one sandwich and $2.25 for one side, but the total he gave me was almost $10. He recalculated the total, correctly, but failed to give me my receipt. I was still telling him that he was supposed to honoe the coupon, and he was still ignoring me, so I was distracted and did not notice that he had failed to give me my receipt. Later that day, after I sent a message through Dickey's web site, the local manager called me and ap[ologized, saying that the guy was wrong. She said he had never done this before - but, as I pointed out, he very easily could have done it many times before, but this was just the first time she had heard of it. Most people would just pay for the drink, and allow Dickey's to continue this deceptive, illegal, "gotcha" practice.