No pharmacist open the door! Not my fault!

Since Christmas is the only day my pharmacy is close (wow! open 364 days per year)
I thought pharmacy might get busy the day after Christmas, so I ask the other staff pharmacist to work with me, he was not very willing but ok to work but he want the early shift.
(who is the manager, anyway) so I let him work early (open).
On that day, I went to my 1st day 24 hours fitness, and didn't realize he didn't show up, I got couple messages, even my boss- pharmacy supervisor he called..anyway, it turn out to be
they have to borrow a pharmacist to open my pharmacy from 24 hours store, so I came in ASAP so he can leave.. my god.. that's so embarrising.. every one know about it, and my supervisor seem not happy with that..
But that's not my fault.. anyway..stupid guy who didn't show up, so I have to be put all the blame!
I have been try my best to run a store, sometimes it's not an easy task..
well, see how long I can stay in that position.. still hang in there!