INSECT PARTS FOUND IN BREAKFAST

Ordered a Flapjack Breakfast . Halfway through my breakfast I found insect legs in my breakfast. Looks like a ****roach or something similar. Took the breakfast back to the Wimpey and the Manager has the audacity to ask me what happened to the breakfast, meaning why was it half eaten. I dont know about others but I certainly do not start looking through my food ordered with a fine tooth comb before eating , so it would only be obvious that I would discover something like this whilst eating... He did state he saw the insect leg and did confirm it was indeed some or other ****roach or grass hopper leg... This is disgusting as well as the questions asked when bringing the breakfast back. further more he only refunded the Flapjack breakfast and not the Chicken Mayo sandwich, who would eat the sandwich after this? I have send the proof of my purchase and refund as well as photos of this to Wimpey and await their confirmation on what they are going to do about the matter as I am disgusted and been nauseous all day, thinking of what else I ate before I saw the leg.... Definitely not eating at Wimpey Jean Avenue again and also do not want a call from them. I want to deal with Head Office!