Yes, Hips. I'm sure there are cowboys around. I would make a point though of being bloody rude back and making sure they realise how wrong they are, even if it just makes me feel better in doing so :) These people can't get away with it.
I have the option of 4 running clubs in my area and all of them welcomed me with opening arms and a friendly manner. For me it was hard to choose which one! I think I made the right choice though.
Am sure (and hope) this would be the case in other areas of the UK too.