Rejection doesn’t just happen at the first encounter. You might have already gone on a few dates, or even slept together. Any of these reasons can still apply after the initial meeting. This one can only apply once you’ve slept together. Maybe you just didn’t please her.
:=> Women have sexual needs just like men do. If a guy isn’t meeting those needs, then she very well might reject him because of it. Most women are pretty understanding, and as long as a guy is making the effort, she should help him figure out what her needs are. But if a guy is just a selfish lover, putting his own pleasure before hers, then he will have only himself to blame when she stops answering his calls.