Response to message complaining about food

Hey all. I’m at a loss.

I placed an order for a small lunch meeting from a place I’ve ordered from before. I just got a slack message from one of the attendees that basically said, thanks for getting food but I wanted the pita pocket and got the wrap. This happened last time as well. I assume they have the pocket, but if not, let me know.

How do I respond to this?! I’m feeling a bit annoyed for multiple reasons, but maybe I’m overreacting? What would you do?