During this time, as you go about trying to make all of your obligations, you will encounter a number of people when the inevitable problems arise.
Be kind to them.
They have neither the power nor the authority to make a decision that would help you any further than they already are. Those who do are hiding behind screens of their liveried representatives, be they call center reps or cashiers. Chances are, there is little they can do either.
You want to be King and/or Queen of your world?
Step one is showing compassion to the servants. Yours or otherwise.
Only the Active/Stupid Evil ones take out their frustrations on them.