Nope, it's one phone call period. One call that's not returned (and since everyone has caller ID, that's one phone call period). You might conceivably stretch that to another phone call a few days later, but that's it.

Right now, I'm dealing with a chica pulling a Seinfeldian routine: we went out once, and I didn't really like her that much (we'd known each other a few years ago, and the years have not been kind. She looks like a screaming skeleton with a dried yet oily layer of greasepaint stuck on her skull.) Her birthday was the next week, and she kept calling to see if I would take her out. The only thing I could feel watching her number pop up on caller ID was (a.) annoyance and (b.) disgust at the whiff of desperation. We went out once: get a fucking friend.

So no, she wasn't right to manipulate history, but believe me, abide by the Brass Rule and you'll never have that problem. One phone call, and if it's not returned, then have a nice life.