Unacceptable service

I have a latex allergy. So, certain foods I know I can't have. I took a Cheezo like I almost always do. It's chicken mayo with melted cheese on rye bread or white bread. Today they used raisin bread. I only tasted it after the second bite. I have a throat infection, so sick on top of everything. I had to go back. They can't remake the Cheezo, and I am forced to take an alternative, which works out to R7 more, but they make me pay for it. I still need to eat. Not a straight swap or anything. I had to go back from work not because I am allergic. Because I was not told about ingredient swap. Now I'm sitting with cold food. I had to rush back to work, and they made me pay for it. It's not a good service.