FR: 2 different HBs cancel date at last minute... need input

HB8:
Met her at work. (She works in another department so I'm not worried about work issues).
I caught her making IOI's on several occasions so I asked her out and proposed some fun things to do. She was excited and accepted my date without hesitation.
The day of the date. She cancels. I suggested we postpone to another day and decided that I would not call but would let her call me. No call.
HB8:
Receptionist at Dr's office. I caught her making eyes at me and saw other IOI's, so I opened her and she ended up accepting a date for New Years eve.
That evening she texted to cancel.
I wanted to do some experiments and see what would happen if a week later I texted her and asked her out again. (I know, not standard PUA strategy). She accepted another date. She canceled that one too on the day of the date.
Can anyone provide any thoughts about what I might be doing wrong?
Met her at work. (She works in another department so I'm not worried about work issues).
I caught her making IOI's on several occasions so I asked her out and proposed some fun things to do. She was excited and accepted my date without hesitation.
The day of the date. She cancels. I suggested we postpone to another day and decided that I would not call but would let her call me. No call.
HB8:
Receptionist at Dr's office. I caught her making eyes at me and saw other IOI's, so I opened her and she ended up accepting a date for New Years eve.
That evening she texted to cancel.
I wanted to do some experiments and see what would happen if a week later I texted her and asked her out again. (I know, not standard PUA strategy). She accepted another date. She canceled that one too on the day of the date.
Can anyone provide any thoughts about what I might be doing wrong?