Right way to deal with customers

So, I had this customer that was less than pleasant.
Her: "why aren' t the blueberries sweet?!"
Me: "I' m sorry, n' ' am. That' s how they' re coming in today. We
should be getting fresh ones tomorrow morning."
Her: "But why aren' t these sweet?''
Me: "Ma' am, I honestly don' t know. That' s Just this batch from the
manufacturer."
He r: "Well, Iwant you to tell me what the problem is and why
these aren' t sweet."
At this point, I' m thinking, "I don' t have time for this It' s busy, and
you obviously just want to complain. Fine, you want an answer?
Here' s an answer,"
Me: "well, rna' am, these are coming from Argentina right now.
There' s a bit of a drought there right now, resulting in barometric
differences of the Trade Winds coming from the Horse Latitudes
in the south. That, combined with the Coriolis effect, causes a
sedimentary in the detritus, which would increase the
salinity of the soil, and cause the blueberries to lessen in
sweetness."
Her: "Oh. Really?"
Her: "Okay then, You said they' ll be better tomorrow? "
she had just looked at the package, it read from California. And
that would have been awkward.