Ruby Tuesday review: did not honor coupon

I received a coupon on line for my birthday It was for a free hamburger and two sides. We went to R.
T.'s and the waitress did not give it to me because she said there was no code. I printed it the way they told me too. It was a picture of a Bacon Cheeseburger and had all the details on it. I can fax the coupon if necessary