Do not be too quick to delete the number. There may not be a foul here. Most women are 'flaky' in the sense that they their emotions changes, cannot make decisions, or procrastinate.
She has not been reading this thread so she is not going to be 'perfect' in every way right now. It's your job to lead and vocalize your expectations.
If you made plans and she reneged, tell her and that it's something that you can't rock with going forward.
If it continues to to happen, its time for the bushes.
In most new interactions with anyone there will be things that each one will have to adjust from what they may be used to and boundaries may have to be set. She doesn't know your trigger points, nor do you know hers.
Give her a chance breh.
This is some great advice, and is true, however I'm set in my ways
I really dont give chances.
just easier to cut it off in the beginning when nothing is invested