I wouldn't worry too much about the locals, I used to be one and wouldn't spit on them if the building was on fire
and most of the folk I knew in the area looked at them either the same way or as a necessary evil to get air and servicing.
This could run and run, the number of "customer service" stories about their attitude could go on and on. If I told you some of the stories that I either witnessed, was part of or were told to me by folk that they happened to, and I believe you would think I was making it all up.
However I am not going to add to this as you can read all this on various diving forums written by a multitude of folk if you are really interested.
Funnily enough the cylinder fuelling story above could be me talking from years ago except I didn't get policy quoted at me, I got threats from the owner from questioning his panel not working, which I actually hadn't as I just wanted to check the pressure due to the short time they filled.
So rather than tell lots of stories I will say one thing which illustrates the place perfectly as far as I see.
I was told by the owner, face to face, that they have a lawyer that watches the diving forums to see if anybody is saying anything that is negative. They will then pursue legal action against that person if they can be traced.
You might think this is a bit far fetched but I once said on a dive forum about 10 years ago that I thought they must be quieter as the boats weren't seen out as much as they were and was subsequently personally threatened by the owner in the shop and my employer, at that time, called to try and trace me to take action.
This was the last straw after previous incidents and have never set foot or used them since, despite them being my local shop for most of the last ten years until moving away.
If they want to make an issue of the above they are perfectly welcome to try!