Do you think the guy has poor customer service. After the he answered a question- customer said "thank you... thank you" he quickly hanged up?

Thanked him for answering their question.

Even if they didn't have more questions (which he could only assume without be sure) is it polite to hang up after being thanked for answering a question?

Do you think the guy has poor customer service. After the he answered a question- customer said "thank you... thank you" he quickly hanged up?
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