I think sometimes the left arm doesn't know what the right arm is doing.
We used TS for CS many times in 2005 when it "wasn't allowed".
We also got the large chocolate milk everyday for lunch until the last day when the lady told us only the small carton is given on the dining plan. I told her she was wrong and that I had been getting it everyday until then. She was very stern and said "I am only following the rules, it's never been given with the dining plan."