your address date name address Dear _____ (name): In the past I have valued your patronage. But despite the fact that we have always enjoyed a mutually pleasant and profitable relationship, you have not placed an order with me in recent (time period). Am I responsible for something said or done that offended or displeased you? Please let me know if anything is troubling you that I can rectify. Just call on the phone so we can talk. I definitely respect your insight and good will. Cordially yours, (name)