My company, Micro Epsilon, has worked with CEI for over 11 years, and I personally have been working with Yolanda Hawkins for about six years. I always receive impeccable customer service from Yolanda and every person that I interact with at CEI. It is so simple to re-order supplies and to schedule service. Service response times are normally within one business day, and CEI always tries to accommodate any emergency requests. If I have a copier question or issue, I always call CEI!