Why didn't they just turn up with the parcel and a credit card reader?
That's what UPS does. Or at least they take cash, for reasonable amounts.
I didn't even get any notice about this. I thought courier services were all about speed and efficiency.
Update:
I got it today, early Monday morning.
It was the usual guy, and he told me that the thing about leaving it a day to soak when they need to collect a fee, is Just Something They Do Now, he didn't know why.
He also didn't know why they stopped just sending out a bill after delivery, but probably they had too much work collecting, I'd guess.