Customer service

How is it great customer service when you have 1 clerk and a manager on the clock and you are forced to keep the kitchen open?? Let’s say the kitchen gets 7-9 orders all at once and you have a line4-6 deep for 10-20 minutes continuous… How is this acceptable?? Pissing off the customers in line because it’s only 1 person up there and 1 in the kitchen getting their ass kicked and getting pissed off about it!! It’s crazy!!