My Dad had a bike shop, it was a fishing shop too so mixed with the smell of grease and stuff was the smell of the sawdust that the maggots wriggled about it. The smell of my youth.
He had a proper counter with a glass front and bits and bobs in there on one side there were ledgers, floats etc, the other there were deuralliers, a fan of spokes, stems and other bikey type things. There were lots of little drawers with stuff in too, it was a right aladdin's cave of bike stuff. He insisted that the customer was always right, even when he was a pratt. Always smile, always be polite and if the customer is asking for the wrong thing to get his bike in and show us the broken part. We sort little fixes there and then, often for free which inspired a lot of customer loyalty. We didn't sell expensive brands, we sold Raleigh and Puch mostly.
I still like bike shops like that, the big ones with their shiney bikes and no 'proper' smell just inspire mistrust in me. Especially if I can't have a test ride. No test ride, no sale is how I like to operate.
It's not just bike shops where rudeness exists. I had a right pushy mare in John Lewis' the other week. I went in for a Henry vacuum cleaner and she told me that I didn't want one and pointed at some Bosch job that I could barely lift. I told her that I would rather have a Henry and would come back later. Then she kept trying to take me to the till with the ticket to buy it then and collect it later. She was really quite agressive. I am a reasonably polite person but I had to be a bit abrupt to get away from her. A horrible experience. We bought the Henry from Tesco.