How could you get the information you want from an individual over the phone who you have no prior interactions or connections to?
I find it very helpful to be positive and befriend people over the phone, and establish relationships with individuals, especially if I will be making repeat calls. One time in school, I wanted to take a specific professor for one of his classes, so I e-mailed him prior to class starting, because his class was full. I was able to speak with him and tell him why I wanted to take the class, so eventually I was let into the class.
Mar 22, 2012