This location lacks any form of professionalism to...

This location lacks any form of professionalism to say the least. I was in the drive thru behind another guest who a problem with a staff members attitude, whom decided to go toe to toe with the customer while the manager standing right there allowing this type of behavior? This is not the first tine that i have winess this kind of behavior from the same crew member and the Manager standing there allowing it to happen.This happened during breakfast around 8am. Poor Customer Service!!