Glad I could be of help! Here are the answers to your questions:
1. When I call for date number 2, I usually try to call her at a time when I don't think she'll pick up. In this instance, I don't leave a message of any kind - everybody's phone these days can usually detect a missed call, so if I call her and she misses it, she'll know you called. I do this, in part, to test HER interest: if I call and she misses it and she calls me back, it means her interest is moderate to high. If she sees it and doesn't call me back, or waits until the next day to call, her interest is low. With that said: any time between 10 AM and 10 PM is usually pretty good. Some guys call earlier or later than that, but as a kid my parents drilled into my head that most people don't want calls before or after these hours unless they're already planning to go out. Ideally, you'll catch her before she's getting tired and ready to go to bed, so the earlier the better.
If I call her and she DOES answer, I keep it pretty short:
ME: (Being flirty) "heeeeey there, what's going on (name)?"
HER: "Oh, nothing, how have you been?"
ME: I'm doing good, keeping myself busy, how about yourself?
HER: Oh, about the same - what's up?
ME: Well, I didn't want to take up too much time - I'm about to go do (insert name of activity: work out, handle some business, etc - this way, it gives you an excuse not to be on the phone for too long), but I found this fun (insert: activity, restaurant, movie, etc) I wanted to check out on Monday or Tuesday and was hoping I could take you with me.
From here, you'll either get an enthusiastic "I'd love to go!" Or, you'll get an excuse. Assuming it's a positive answer, set up the date and time you're going to meet/pick her up, then say "Great, i'll see you on (insert day you agreed on) at (time agreed on)." Then, you don't talk to her again until you pick her up for the date. Simple stuff, maaaaan!
2. If I call and she doesn't answer, I usually just let it go and wait for her to call me back. I don't feel the need to text her because I just called, and texting her right after I called seems like needy behavior. I trust the process, which is that if she's interested, she'll see the missed call and call back. I have yet to have a woman that's highly interested in me not call me back if she missed my call. I don't leave voice messages until after I've made her the girlfriend - and even then, I find most people don't check their messages like that, they just see my number and call me.
3. If she says she is busy on said date and does not offer a counter offer... neither do you. So, for example:
YOU: Hey, so I was thinking we could go out to this new restaurant on Monday or Tuesday at 7, which day works best for you?
HER: Oh, um, I can't make it on those days, I'll be catching up on some work.
YOU: Oh... okay...
HER: Yeah, sorry...
Notice she's not leaving a counter-offer. What most guys in this scenario would do is try to throw other dates and times at her - this, however, can also come across as very needy, and it makes you appear like a man with no other options. So, if she doesn't offer up another day and time that would work for her, just say "alright, well I'll talk to you later" and hang up.
Now, at this point in the game, I typically just let it go. Why? Because I've dated enough women to know that the TRULY INTERESTED ONES WILL GIVE A COUNTER-OFFER. They can't not do it - if they feel you may be the love of their life, they're going to want to find time to spend with you; and, if it's not on the days you suggested, they will make it known what days they can make time to see you.
With that said: for newbies in the game that are needing more proof of her disinterest, I tell them to wait a week, call her again and ask her for another date. If she gives you more excuses without counter-offers, she's definitely not interested. If this happens, though, don't take it personally: sometimes you can have a great first-date with a woman, and she can end up changing her mind about you once it's over. So far, though, you're off to a great start, so keep it up!
