I had an auction for some hatching eggs end on the evening of Monday the 19th. The buyer paid promptly, so the package was shipped on the morning of Tuesday the 20th. The buyer is getting concerned because the USPS tracking hasn't updated since the 20th. It shows the acceptance, it getting sent the main sorting facility in my area, then departing the sorting facility by the evening. I know the 'tracking' can be dodgy at best. Is there anything I can do or say to the buyer that might help ease their worries? I tried calling the USPS, but that was pretty useless. They repeated my tracking information, then told me if I wanted the package there by a guaranteed time, I should have sent using express mail. I've never had much of a problem with the USPS, either receiving or shipping hatching eggs. But they are rather time sensitive. I guarantee that they will arrive intact (no breaks, dents, cracks, etc.), but the longer they sit, the less viable they become. But shipping time is out of my control. I send out eggs that are only a couple of days old when they're shipped. Eggs laid on the day of shipping are sent as extras most of the time. This time, the person paid for 12 eggs, and I sent 19 eggs. I also, while I was composing this, got a message from the buyer. They want me to reship (for free, from the sounds of their wording) due to this USPS snafu. What should I do or say?