The interviewer would like to know about any formal training you have received, related to customer service. This training could include a robust onboarding plan, on-the-job training, courses taken, or even books that you have read in your spare time. Show the interviewer that you have an interest in bettering your customer service delivery. This question is a great time to ask the interviewer about their company-specific customer service training and manuals.

"Near the beginning of my career, I did take a course on customer service basics as well as training on collection calls. There are best practices that I still implement today, such as active listening, not interrupting, and repeating the problem back to the customer. Because much of my role is over the phone and computer, I have to rely on my voice or wording so keeping a pleasant tone is important."