Regardless of the industry, great customer service is critical to overall success. However, many companies overlook the necessity of finding employees who are equipped with the right skills to work face-to-face with customers. This lack of foresight often comes from the pressure to fill positions in a fast-paced business environment, but will end up costing businesses in the long run by placing employees who are not prepared to do the job in these positions. The overall principle for companies to remember when hiring for a customer-facing position is to hire based on personality traits. Markets, technologies, and job descriptions all change, but what it takes to serve customers remains the same. While training can cover a lot of ground, there is an element of this that isn't teachable, and must be picked out by the hiring manager before an employee should be considered. Filling a seat with a warm body isn’t as prudent as waiting to hire the right employee. 
View Source: Forbes