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Information × Registration Number 2121U005644, Article popup.category Thesis Title popup.author popup.publication 01-01-2021 popup.source_user Сумський державний університет popup.source https://essuir.sumdu.edu.ua/handle/123456789/89073 popup.publisher Сумський державний університет Description One of the most important tasks of any enterprise is to ensure its success and loyalty to customers for further effective development. Poor service delivery is a problem that can and should be solved. Consumers who are dissatisfied with the quality or provision of incomplete services begin to go to competitors. And in this case, the company loses the customer and profits. popup.nrat_date 2025-05-12 Close