ATCO1987 and Loose rivets,
I can assure you I put in complaints to the supervisor on duty, the dft, anyone else I could think of and informed the airline I work for. And guess what. They apparently "take this sort of thing very seriously and will investigate the incident fully"! Yeah, right! I have since heard that this is not an isolated incident here and although I appreciate that it is probably, or hopefully, a minority of idiots that do this sort of thing, that minority is, as is so usually the case, making life a nightmare for their colleagues as well as the rest of us. I wish I'd given them more hell at the time but can only say I was so amazed that anyone could do that, I was left temporarily speechless! Probably a good thing in hindsight!