haven't cashed in on it, but i had some stupid shit happen to me once, it was taco bell, but even being a fast food resturant (contrary to popular belief it's not a bunch of teens....) the service was fucking horrible.... i was standing there waiting for over 15 minutes... just to have my order taken, then it took nearly another 10 to get the food (wasn't much either...) my wife ended up emailing headquarters, and we got a call, told us we have free food waiting up there, just have to ask for someone (dunno who, my wife has all that info lol) and also, next time i went in there, it was a whole nother experience.... fast and speedy... done right the first time..

the worst part about that visit tho, was there was all of like 3 cars in the drive thru and only one family inside the store, who of which, already had their food... lazy asses...