Sonic Drive-In

I made an online order and when I pulled up to the speaker and hit the red button I was asked to wait a moment I had no problem with this but when a car went around to the other side and was asked if they would like to order I looked at the clock 10 min. Passed since I was asked to wait so I pressed the button again and when I said I ordered online they knew it was mine. I didn't appreciate being forgotten please help