Do you use click'n ship? It's a great feature the USPS offer were you can buy postage online and then have your mailman pick it up. Except.. USPS's production control / testing processes seem to be non existant. Someone set the system up to recycle old delivery confirmation numbers.... which has had the unexpected result of sending out postage due notices to the customers who originally used the delivery confirmation *before* it was recycled. So, say you sent a package in February and paid for it. Well, if that number is reused by the Postal Service you'll get a nasty gram saying that the original number was cancelled (it was, by the post office after it was used and paid for so they could reuse it) and that you need to pay for this cancelled postage (which you didn't cancel and paid for, but is now back in use by someone else). Better yet, USPS has known about this for about a month now and has been trying to figure out what to do. In the meantime, if you get more than 2 of these notices your account gets disabled. Sweet huh. Not sure how they'll resolve this but right off the bat I'd suggest shutting off the nasty grams and auto-disabling functions since they know it's their error. And maybe a few actual scafflows will get an unintended amnesty but the solution is to test that system better, not continue to punish paying customers who've done nothing wrong.