It's rude to mistreat people in the service industry.
Carlita just received her order from the food counter and it does not match what she ordered.
Carlita wants to get the order corrected.
Carlita lets the worker know that the order is wrong and explains clearly what her order was.
Carlita draws attention to herself with volume and tosses the food she received back over the counter all over the worker that gave it to her.
The worker apologizes for the mistake and quickly fixes Carlita's order, and she also receives a full refund.
Carlita is perceived as crazy and rude and promptly removed and barred from the premises.