a few scenarios that i get, and would appreciate your suggested responses to:

1, she cancels with a lie of an excuse

2, she cancels with possible valid reason and suggests another day

3, she ignores all attempted contact on the day of the meeting to finalise the details and totally ignores this when you speak again

4, she ignores all attempted contact on the day of the meeting to finalise the details but apologises with lie of an excuse

i'd like to know how i should go about things differently if these might be the 2nd or 3rd time cancellations (if you'd let it get that far)

Replace her.
If she suggests another day she is telling the truth and is genuinely interested in meeting you. Go with it.
She is fucking you around and thinks it is acceptable. Replace her.
She is not reliable. Replace her.

but i've experienced all these things and have sometimes ended up fuckin them. i just thought there might be a more high percentage standard response. Dont some girls use a cancellation as a shit test to see if it bothers you?