I've had something going from DC to Minnesota which took a detour through Anchorage Alaska, and that was USPS. At least they ultimately deliver, though. I've had things arrive so late I already got a refund from the seller...
FedEx, though...I once ordered a large item with over 1kwh of battery capacity from China, which I tracked from Shenzhen, to California, to the distribution center in Maryland that I knew was the last stop before my house. Then they sent it to Kentucky and lost it. To top it off, every FedEx operator I spoke to had a different explanation for me as to what had happened.
I've had FedEx operators ( unsuccessfully ) try refusing to hang up from their end so that I couldn't take the "how did we do" survey at the end...