I preordered my iPhone 6+ 64GB Space Grey over AT&T Business Premier Account, but now am thinking that I'll switch to waiting in line at an Apple Store day-of to get it; my shipment date is early November. However, I have had a huge hassle canceling my purchase through Premier (essentially saying I can't), and now Apple won't let me upgrade my phone with a 2-year contract because I "used" it up through the AT&T preorder. Has anyone had a similar experience? How did you go about handling that?