I wouldn't be so rude if you werent so fucken stupid

so the old prune that just bought the halo figure back, just called me, and had a hissy about my attitude apparently i was very rude and had assumed wrongly that he had played with the figure, the truth was that i asked if he had played with it, not assumed, in this business I've learned never to assume anything. Also if i was trying to make a good customer base i was going about it the wrong way. She also mentioned that she would never be back. To that i was very calm and and accepted everything she had said and asked if there was anything else, and boy did that stump her, told her i appreciated her calling and that i would pass along her comments to the boss. she stammered for a bit before i said thank you for calling and hung up the phone.
I called the boss and told him what she said, he said that they must think were fucken stupid or something and sighed.. and that was the end of that issue.

now contrary to what i post here and how i phrase things, my thoughts and opinions are all personal, never vocalized, i work in a customer service environment, i cant afford to vocalize my opinions, and when ever a customer approaches me for help assistance or a purchase I'm always, always very pleasant to them, i mean its cash in hand for us right, but if this old prune wants to get all hissy because she was in a hurry and i wouldn't do what she wanted at her pace then she can go elsewhere, we don't need a customer like that.

- they must think were as stupid as they are