Not everyone is "phone friendly" so it could be that you never chat for hours on the phone with your new sisters.
If you are worried about getting to know the chapter (or just the other new members in your class), set aside a night every week and invite a different bunch of them to go out for coffee & dessert or make plans to attend an event together. Not only will you meet more people, your new sisters will really be impressed with your desire to get to know them.
Best of luck!
Zeta Love,
Barbara
ZTA Alumna
http://tallahasseezta.tripod.com