Final Fails?

I feel like the topic i picked is pretty developed but I know that will only make it more of a challenge. The biggest obstacles I foresee in creating my final paper will be being unable to interview the span of people I would like to in order to get the full scope that I have intended to cover in my paper. I do have a question though. If I wanted to interview someone I won't be able to see to interview can I pose my questions through a facebook message? In this way, I thought it would be easier than trying to call them and record over the phone because it will be saved on my message to refer to.