sometimes personal events or a weekend away affects things, I'm fairly new here and i can relate to your anxiety too, but I've found in my 1 case similar to yours to just relax, even though you have ran out. that does make things a little more tense as it did for me. 99% of the time vendors do as promised, but some things affect the postage. I would say that perhaps an area or prompt or message system can be put in place so vendors can let you know. But that is starting to control things a bit too much i guess. best to order before running out - although
i'm one of those who doesnt always do that ha ha.