The girl i went on a date with doesnt answer my calls BUT?

so im pretty sure this girl's not answering my calls cuz i called her like 3 times alread over the course of 2 weeks... this has been after i hungout with her and thought we had a good time but apparently we didnt.. anyways i thought her friend and i had a very good connection and i am interested in getting to know her... my question is ... Should i call ONE more time from an unknown phone (maybe on of my friend's) so she WILL have to answer OR txt her although i know she will most likely not reply... so she Probly will answer if i call from the unknown phone (1 of my friend's) and ill have senseless chitchat with her and at the end ill be lik.. hey btw whats (her friend's) number.... is that better or will she just be like... "oh i dont have it right now but ill call u in like 5 minutes okay..." (lol that means she will never call me)