For a large delivery I paid to have a package delivered in the morning, upgraded to the 8:30-12:30 time. At 10am, I get a message saying it will be delivered between 14:30-15:30. I had a business meeting at 13:30, so couldn't stay any longer. I didn't want to book again, as I will just have to pay for another upgrade and I figure system can't figure it out. Today I received a message at 10am, saying it will be delivered between 9:50-10:50, but of course I'm at work. I'll take another morning off to try again tomorrow, as bless the driver he's a very nice guy and seems willing to try and figure out a time. I just like things to make sense.