Old salads on paid burger

I am highly disgusted for the fact that I paid for old,sour salads on my burger....If i get sick I will press chargers or get a health and safety rep to check out your store...I can't believe that you guys did this to me....mcds is my favourate and I always buy my lunch there but as of now I will never ever set foot in your restaurants ever again. Give your old **** to the dogs not to us that are paying for fresh meals. I want my money back tomorrow when I go to the store if I don't there's going to be hell on this earth. Promenade mcds you guys suck big time and you lost a valued customer