I just wanted to take a moment to let you know how much I have enjoyed working with you. As I told you when we first met, our firm had been very reluctant to use a collection agency due to bad experience in the past. You have alleviated all reservations we may have had by offering the kind of professional service I did not think was available to me from the collections industry. You really understand my needs and the needs of our industry and are always able to satisfactorily resolve the matters I bring to your attention.