Do I call her back or do i wait?

I'm recently talking to this girl that i think is great. We've been just texing up until wednsday when i decided to call her....let's just say the conversation was a little awkward....I called her the next day: 1st time she didn't pick up, 2nd time she said she would call back but she didn't. No worries, so i call her today and she doesn't pick up (the phone rings all the way to voicemail) Do I try calling her back later on?