Final answer:
The word 'congenial' in the sentence means 'good-natured and kind.'
Step-by-step explanation:
The word congenial in the given sentence means 'good-natured and kind.'
When describing someone as congenial, it means that they are friendly, pleasant, and easy to get along with, even in difficult situations. In the sentence, Mr. Robbins is described as congenial because he remains kind and amiable towards customers, even when they are rude and demanding.
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