Ok so this chick im always flirtin with gives me her number the other day, I asked her how about i get to know you a little bit, hence she gives me her number, seems super stoked, I tell her we could do watever and she agrees yes and tells me she'll be waiting for my call. So boom, everythings gravy, wrong! I call her 2 days later, fine she tells me shes at work n that she'll give me a call later that day...well no call later that day. Next day I text her, she's with family and she'll give me a call later that day...fine, but again no call later that day. I skipped 1 day no contact and no contact from her either. Next day after, I call her which I would have thought i'd be on her contacts by now, well no. She doesn't pick up first of all, but immediately after, she texts me, who's this? So fine watever, I tell'er who it is. I text her asking if everythings cool, if I did something maybe that affended her, and that im we should shoot the breeze and that im really interested in her. Well, she texts me back telling me she's at work which I know she was, but she then texts me after that and after all this cat n mouse BS, she tell's me ive been meaning to tell you, I have a BF. I mean wtf dude, what the hell happened. Did i do something? is she skitzo? possibly there is a BF, hence why she wouldn't pick up my calls often? Help me out fellas, im in pursuit of this ass, what should I do now?

You gotta go and find somebody else. At least for now I think you're too deep in there to turn it around.

I've come across something like this before and, too, failed and couldn't find a reason why. The reason is either that she really changed her mind and wasn't interested anymore (which I don't believe) or that it was some kind of shit test.
Obviously, after the first day that she didn't call and you contacted her again the next day she saw that she can push your boundaries and you'll still call.

So, the only solution I can give you is that you should've not contacted her again after she didn't call as promised. It's what's sensible and what you would do with every other person. Otherwise you're downgrading yourself in front of her and yourself.

Omg! Don't call her everyday. If she turns you down the first time, maybe she really is busy who knows. Leave it alone. Hit her up in couple of day with a completely new thread.