started on the hood string which veered into pros and cons of Mr Freewheelin and then a general mulling of how a shop survives if owner doesn't like the public or has an attitude. I posted way back about Peem Brewster in Dundee (father of DUFC hero Craig Brewster). Peem was not keen on disloyalty and did not like people buying parts from catalogues (no internet then) but particularly anti-Nicholsons the other shop (still there). On the camber, you can build up a personality that brings masochistic customers in to be insulted, but your business would also need to be robust to cope as not so many masochists out there.
There is a fantastic scene in the WC Fields movie It's A Gift where W.C. finds himself looking after his friend's shop for the day. The camera tracks out the shop through the front window across the street to a blind man coming out of his house. W.C. clocks him but is very busy with customers so he starts shouting at his assistants Open THe DOor For The Blind MAn, Open the door for the blind man. They can't work out what he means, goes on and on til; the blind man smashes through the closed glass door with his stick. Check it out, hopefully on Youtube somewhere, it is very funny. I also cite Black Books where Bernard Black has an interesting approach to his customers.