Del Taco / did not want to serve breakfast during breakfast hours

On the menu it says they serve breakfast from 11pm to 11am. I ordered 1 egg and cheese burrito for $2.89 at 11:44pm. The cashier replied that I could not have the burrito, even though it was within the breakfast hours, because the order before me ordered a chicken product. I clarified that it was breakfast hours and the cashier gave me the same response. I ordered two Turkey del tacos instead. But this was a big inconvenience because I had just been released from the hospital tonight and was told to eat lightly with eggs crackers etc. Also, the cashier never gave me a receipt.