The objective of this research was to determine the customer service in the construction company Celso EIRL in 2021, the method used is quantitative, descriptive - non-correlational, the population and sample consisted of 40 clients who buy regularly in the Celso construction company. E.I.R.L. It was obtained as a result that, after making an analysis of the average of the responses, it can be observed that 47.50% of the clients consider that the customer service in the construction company Celso EIRL year 2021 has high level, 32.50 % of clients consider that customer service is regular and 20.50% of clients indicated that customer service has low level. It was concluded that customer service is good according to the statistical results obtained, considering that satisfaction is consistent with the quality of expectations of users or consumers, these must meet the perspectives of consume...