Can you ever get over it?

I am not even fully aware of the definition of social intelligence, but I intuitively think, that smiling and being nice to those around you is part of it.
Now, don't get me wrong, I love the Netherlands, and admire their egalitarian approach to everything. I like how they do not make big deals out of things.
On the other hand, having to prepare for your interaction with those working in the service industry as one would prepare for a minor battle, does take a lot of energy. I just came back from the pharmacy... I felt terrible about daring to disturb the ladies standing in front of shelves reaching up to the ceiling, not wearing a white coat, putting boxes here and there and then back here, for signature and then with a piece of paper back there.
My box of medicine was within the reach of my arm, on the counter, but it has not been checked out yet by the head pharmacist (?). So I stood. Like the other fellow intruders, we were taken for thin air. We were even afraid to talk to each other not to disturb the box relocating process. But frustration was building up.
I just want that little box. I do not mind any more the state of health insurance, I am willing to pay for it. Just let me have it. But no... Ultimately one of the ladies came over and after 10 minutes of soundless waiting, almost a tear of despair in my eye, I got the box!!! Victory!
I left the pharmacy, feeling the cold Amsterdam air felt so refreshing, I was not the intruder at the pharmacy any more.
And now I needed milk. But I could pick it up at the supermarket where I did not have to wait at the mercy of shopkeeper, I just took it from the shelf and rejoice the young girl at the counter, who does not look at me and looks extremely bored, but at least she scans all my groceries in 20 seconds and I am out and free of the service industry again...for hours!!!!
Still, I will not get it. Everyone likes being smiled at. Do not people in the service industry understand that smiling is the first step to building lasting relationships with clients?
Or am I missing out on something?