Wrong Order

I ordered my favorite breakfast meal from the KFC by Kempstar Mall. I get to work and excited to eat my chicken mayo with cheese sandwich, only to be surprised by a cheese, egg and tomato sandwich. First of all, i don't eat tomato because i have Ulcers and secondly, i don't understand why they got my order wrong because my slip clearly states that i ordered a chicken mayo with cheese sandwich. I'm very dissapointed in their service. I'm such a huge fan of KFC. I even have proof-my slip and a picture of the sandwich i received.