Hiring employees is never an easy job. People can say good things about themselves and justifiable reasons why you need to hire them. However, there are basic things you need to know from the candidates. Evaluate how customer service means to them, their experience when it comes to customer service, teamwork, situational questions and why do they want to be part of their company. When all of their responses are aligned with the qualities you are looking for an employee, then you can hire them. However, you must be objective and try to avoid bias answers especially from those who would speak very convincing.