Moldy Whiskas Cat Food Bought from Migros Put My Cat at Risk

I bought some Whiskas wet cat food from Migros, but when I opened it, I discovered small worms inside. Quite horrifying! If I didn't catch it, my cat would have eaten it. This neglect has really upset and worried me. The expiration date said 2026, so I made sure to check before buying. How did they manage to keep it in a place where it got infested? I won't purchase from them anymore and will make sure to alert everyone I know. There's a brand I rely on, but I won't name it to avoid coming across as promotional. I've come across the same problem before but ignored it. I'm really upset this time!