Platform problem

I've just returned to Glasgow from Stirling - home of the famous castle and the Wallace Monument, which pays tribute to my famous ancestor Sir William (aka Braveheart) - but I nearly missed the train. Why? Because the video monitor in the ticket office at Stirling said the next train to Glasgow would leave from platform 9. I duly went to platform 9 and, after a while, heard this announcement: "The next train on platform 3 will be for Glasgow Queen Street." On a hunch, I called across the platform to a station employee and said: "Where is the next train to Glasgow leaving?" And he said: "It's now on Platform 3." Which is not the same as what the platform announcer had just said. As it was peak hour, I initially assumed that there were trains to Glasgow from both platforms but, as indicated in the ticket office, the first would leave from Platform 9 (which has no monitor). As it turned out, if I'd stayed put, I'd have missed the train altogether. Memo, Stirling station announcers: please think before you speak.
PS: The wasn't a case of me being stupid, at least not on my own. Another passenger was similarly perplexed.