Over 1000 posts and you don't know the answer to the question!? Haha jokes, sometimes we all ask questions we know the answer too... just to back up what we already know.
Definetly next her. I would have called her once and left her a voicemail message, and than never called again. This is why it is REALLY essential to build enough rapport with a girl beforehand to make sure your plan follows through. Getting digits is hardly nothing these days.
I know I've talked to quite a bit of women and I know for a fact that many times they give their number to just get the guy off their back! (And at many times they give a wrong number!) lol. (But we all know how to bypass this, and if you don't, you have some learning to do!)
All I can say is just build more rapport next time and try not to focus TOO much on getting the number. Rather, focus on carrying out a good, interesting, funny conversation while being charismatic and confident at the same time. You'll notice that you may not get as many numbers, but you'll get higher results. To me, I'd rather get 5 numbers and plan dates with all 5 of them than to get 10 numbers, and only get 2 dates.
Hope I helped,
Axcell.