Bad Lettuce in Dagwood

I went to Wimpy BramFischer (Blairgowrie) Randburg this morning to get a dagwood and a daily breakfast special, the lettuce on the dagwood seemed to be off, it was black in colour as if it was cooked or warmed up and not fresh at all, I ordered a mochaccino and had it there but didn't see my food in the restaurant as I took the food as take away and only had my mochaccino there, only realised the nature of my order when I got to work. The lettuce seemed like it has been kept for 5 days outside the refrigerator then warmed up, This is one of my favourite breakfast spots but I am so disappointed no one alive would eat the kind of lettuce that was in that dagwood it was so off and very far from fresh. I had to throw away my food because there was no way I could eat that. This is really uncalled for, me knowing the standard of Wimpy made me feel like I had ordered my breakfast elsewhere. Not Happy at all that was not worth paying for.