Notary-At Mail Boxes

I walked into this business one afternoon with a double sided piece of paper in my hand that I wanted to photocopy in black & white.
I approached the counter and observed an older looking woman. After pausing for a moment, waiting for the typical, «Can I help you?,» I broke the awkward silence by asking to make a copy, to which I received a very curt, «face down, top right side.»
I thanked her for the «direction» and proceeded to the copy machine. Mind you, I know how to use a copy machine, so when I saw that this particular model had an auto-​feeding tray (and needing to photocopy the page on both sides) I inserted the paper and pressed start. As the paper fed into the machine, the woman walked over and exclaimed something to the effect of, «I told you top right side, the tray sometimes jams the originals, that’s why I said top right side!» Not wanting to create a scene, I politely asked if I could make a double-​sided copy, to which the woman replied, «you want to copy the back side?» and motioned to photocopy the back of the original on a separate sheet. She clearly just didn’t get it.
I quickly interceded before things got worse, and told her that I would just go ahead and pay for the single copy, and she «graciously» said, «I’m not going to charge you for it.» The kicker of the whole experience was that as I was walking out the door, I heard this woman murmur, «Jeeeezus» under her breath. I could have turned around to tell her something or call her a name, but I didn’t want to be as childish as she was being.
I’m writing this review purely out of principle, because I believe that people should speak up against rude, disrespectful customer service. It’s just not the right way to operate. If anyone has the same feeling or sentiment as me, then I would implore them to avoid this business at all costs.
I hope this prevents someone else from going through my very negative experience.