I think most of us are not perfect so errors will be made occasionally. Try to help the person out, not punish him. I have bailed out controllers and they have bailed me out of situations. Out of thousands of landings how many can say never once they didn't have a landing clearance? How many times have you saved a controller by telling him he is causing a conflict so you can not do what he cleared you for?
Our pilots organized golfing tournaments with the LAX and SFO controllers to get to know them with the assistance of our incredibly sexy flight attendants to run the beer carts. Yes, we did get a bit of special treatment in the skies the sky nazis didn't get. United didn't have golf tournaments, we did.