[MetroPoliceGray]

Having worked at FedEx Ground, it might have been a address mixup as mentioned. Or got lost in the terminal, due to their sorting & labeling process. I've seen it happen. Almost all the time the QA cage is full of undelivered packages for some reason or other. But I can tell you this: they bust ass on the workers for missed parcel, and usually try to make it out the next available day if all is well. Call your local terminal and see wats happened. They might be able to help you. Sorry if I couldn't be of anymore help.