How do I go about making a complaint about the manager

Dont listen to pineapple pina...if the mfs cant flip a burger to save thier life then let them know life to short to be letting mfs run over you even if it is a sandwich

Call the manager.

Life is too short to be complaining to a manager. Be polite, take your order. Do not give people attitude on a order. Make the best of it in return. Those employees slave and are on it. They are always busy so send me your zelle. Ill credit your money. I've been here plenty of times and they do their best to accommodate everyone.