An association based in New South Wales had a new accountant who had been there for about three months and had yet to talk to a member. It was time for renewals to go out and, being conscientious, he had read the constitution where it clearly stated that "members must be given six months written notice should they wish to resign their membership". So he sent out the renewals with a bright yellow sticker attached that stated "Payment required within 7 days or legal action will be taken". Without speaking to a member he had single-handedly managed to devastate their membership numbers that year (and for several years afterwards).
Renewals are a form of direct mail ... and one that this organisation had roundly stuffed it up. This was unfortunate because direct marketing is not difficult. It is simply a matter of understanding how the different factors work together to produce a successful outcome.