Broken Vending Machine

 
 
The vending machine in my office floor somehow always refuses to spit out products made by Coca Cola. I always pick Pepsi Max instead, but some people still insist on Coca Cola. So I put a note to avoid disappointment, and it seemed the maintenance guy could not find what was wrong with the machine. He left his comment in my note instead and ask us to call him everytime the problem occurs - he also left some Coca Cola cans and coins.
FYI, the vending machine still has the same problem. But I did not bother to put the notes anymore. We just keep on calling him.