So... This is an embarrassing one...

I was browsing with the app for fun, and accidentally booked a room (same day check-in) by accident, cancelled it within like 5 seconds. Of course it was a Ritz Carlton too and since it's well past the cancellation deadline the cancellation fee was like almost $600CAD.

I called Marriott customer service and explained my dumb dumb mistake. The lady said she will put a note and sent it to the hotel and I should hear back in a few days.

So question... anyone made a similar mistake before?