Poor service at a traffic department branch

According to signs at the traffic department branch in Ottery, they close at 15:30. So with that in mind, I move heaven and earth to finish my work so that I can make it on time. I arrive at 14:30 but struggled to find parking so I walk up to the "Helpdesk" (not much help offered here) at 14:40 only to be told that they don't take any more people after 14:30 - a whole hour before they are legally supposed to stop work! So I ask one of the unhelpful ladies who is in charge and she tells me it''s the first female I spoke to so I ask who is in charge of her and am told that their supervisor is at a training session and will only be back - you guessed it - at 15:30. So I decided I would wait for him. I had resigned myself to the fact that I would not get my driver''s licence renewed that day but I would make my point. Long story short, they have an internal arrangement to close early so they don't have to stay late meanwhile the public is under the impression that they have until 15:30. So you jump through hoops at your own place of work, rush through all kinds of obstacles to make it on time only to discover it's been for nothing! Surely this is not legal? I can't think of any institution which deals with the public where you can just take an hour of someone's time. And do these employees get paid an hour less of taxpayers' money as well. I would probably have been a bit more understanding had it not been for the attitude of entitled that accompanied this totally unacceptable arrangement. Flies and honey....