What does it mean that girls only answer text messages and don't answer the phone?

First of all, she is very busy. Second, she doesn't really like you. She just wants to find a virtual person who cares about her and satisfy her feeling of being cared for. Fourth, she may like you a little, but she has a boyfriend now and wants to call you after choosing.

I suggest you make it clear that you like someone and don't even listen to your voice, and then you must meet. If you disagree, please give up.