Commercial Credit Management & Collections Specialists. With over 30 years experience in credit and collections, DMG provides companies that may or may not have an established internal credit department the opportunity to outsource their credit functions for a fraction of the cost of a full-time employee. Our services allows our clients to concentrate on the numerous other aspects of their company and focus on growing their business. We will review your entire credit process with you and can do everything from making recommendations, to writing proper credit policies and applications, running credit history checks, receivables management and collections.