I've lived in my new place for about two months now. Since then, I've paid two cycles of bills. At each of these times, I've notified credit card companies that my address has changed. Yet I'm getting a third round of bills with my old address still on it.
I don't think those collectors--or whoever opens the bills to take my checks-- ever bother to look for updated information. I mean, how many times do I have to keep writing my "new" address? It's not so new anymore.