This fits nicely with my experience of FedEx. They sent me a bill 7 months after I had received the package. A few days later I get a reminder that doesn't include the necessary information for payment, which seems rather lazy and stupid since an unpaid bill might well have been lost. It refers me to www.fedex.com where I'm told to create an account. I do that only to find it doesn't know anything about my bill. By chance I do find the original bill shortly afterwards. Turns out this bill sent 7 months late had very small text saying "to be paid immediately", the first time I see that on a bill (it's usually 30 days in my country). Of course they sent me a second reminder 10 days after I paid.