Who said "The customer is always right, even if he's wrong."?

This quote is attributed to Mr. Krabs.

The customer is always right, even if he's wrong. - Mr. Krabs

"The customer is always right, even if he's wrong."

Mr. Krabs Work

"Money, money, money! Ar ar ar ar!"

"I love money."

"The only thing I love more than money is me."

"Ahoy and welcome to the Krusty Krab, where a penny saved is a penny earned!"

"Hard work never killed anybody."

"Work with purpose and integrity."

"Hard work pays off in the end."

"A man's gotta do what a man's gotta do."