If you have a guy who is calling and texting you but not asking you out or making plans to see you, it's confusing to say the least. I mean, why on earth would he be calling if he doesn't want to spend time with you. The answer is simple. He doesn't see you as a priority, just an option. Guys will call and text girls just enough to keep them interested.
He may have other girls that he is interested in, but wants to keep you on the back burner. He may like you, I mean he has to think something of you if he is calling and texting, but the key is, he doesn't think enough of you. If he thought more of you, he would be asking you out.
The guy that keeps you on that back burner has a few tricks also. He may even ask you to spend some time with him, but if you notice, he always has an escape route planned in the form of using words like, "maybe", "I'll let you know", anything that he can call up later to back out or make an excuse.
Think about it. When have you had a guy that you likes a little, but weren't that into so you just kind of strung him along. You used those escape routes when he wanted to pin you down to a date. You might say something like, maybe, I will let you know, and then throw out some excuse about work or whatever.
The bottom line though, if a guy is calling and texting and not asking you out, he is not pursuing a relationship with you. He isn't serious. This doesn't mean he won't change his mind, but as long as you are waiting on his call, hoping he will step up, you are wasting energy. There are ways to handle these calls and texts to get him to step it up, but waiting around on him isn't going to work