don't know about a lever, but practically all vending machines have a phone it them that can call home about being short on drinks etc. There are also specific machines that have water, speakers, and a screen in addition to the usual fizzy drinks that the local municipality can use in an emergency to give out drinks free, display messages, and sound warnings. These machines are rather few and far between at schools or near city offices, but I have seen them here and there.
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