Subway Meal Nausea, Vomiting - Subway, Düsseldorf Nordrhein-Westfalen

Honestly, I absolutely hate this place now. It’s one thing for me to get food poisoning because im an adult and know what to do when these things happen, but i had only one other experience of food poisoning but subway topped off. I shared the other half of my foot long (Spicey Italian) with my little sister whom is a minor and she got sick as well. I hated watching her almost crawl to the bathroom because she never experienced something like this and how was I supposed to tell her it was from the food? I am NEVER eating at any subway and neither is my family or neighborhood community. I was so angry and hurt to watch my sister and do my best to care for her while I myself was vomiting, had diahrrea, heat flashes, body ache, stomach cramping, and even got a high fever. I had only eaten subway on this day (yesterday) and after a couple hours it all started. From 3 pm up until the next day this moment (almost 10am) I barely have enough to type this up out of rage. She is currently still in bed with her bags next to her and I barely have the strength to check on her. This place and all other subways places should be completely out of huisu esa now that i realize how many lawsuits and complaints they have towards food poisoning. I am so so so angry. How does a business like this stay around?