They call you monday at 4:30pm for a delivery day of wednesday. You call them in the morning tuesday to see what time and they have to call you back towards noon because they don't know yet. Then when you call them back at 2 to change the time by half an hour because you can't get off work that early. The girl tells you that you should have told her that 2 days ago and she can't change it now. So - basically - you should call her and tell her what time you can be there before she calls you and tells you what day she will be there.
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