Fall through
Definition 1 of 2
Pro Tip 1/3Plan Disruption
Used when a scheduled event or agreed-upon arrangement cannot proceed. 
The meeting fell through at the last minute, so we rescheduled.
Pro Tip 2/3Expectation vs Reality
Shows the difference between what was expected and what actually happened. 
Despite our hopes, the charity event fell through due to lack of funding.
Pro Tip 3/3Disappointment
Often conveys a sense of letdown when something anticipated does not occur. 
We felt disappointed when our vacation plans fell through.