If the rider did not forget to send it, but forgot to order it himself, he was forcibly misinterpreted by the clerk as a complaint and punished the rider.
In this case, keep the screenshot of the chat and record it (the person in the store misinterpreted your meaning on the phone, if there is no recording, call again, and record it when calling, indicating that the other party just misinterpreted it and asked the other party to understand the situation clearly and handle it reasonably).
If he insists on punishing the rider, he can take this recording to official website to complain about the takeaway platform, and then give the store a bad review. I believe he will soon realize his mistake.